Already starting with the refutation!
There is a neutral space separating the Universes, as you can see in this quote right here.
It is mentioned exactly here that to travel between other Universes you need a transport cube
Here champa mentions that it would be impossible to reach hitto assassin if he gets his cube
Without further ado or delay, here it shows a space between Universes
Now let's disprove about the Universes not having separate space-times!
Exactly here it is mentioned that different events changed the planet Earth of Universe 6
If it had the same space-time the earth of universe 6 would be there, as we can see, the Universes do not share the same space-time, now I will show you one more statement of that.
Vegeta mentions that the Saiyan does not have a tail and found it strange, in the same scan Vegeta asks about Saiyans being Frieza's slave, he mentions that this never happened, now in that same scan it is said that different things happened in this universe, in the same scan mentioned, it is described that the planet sadala still exists, and in universe 7 it was blown into a thousand pieces
https://imgur.com/a/mAb9Nov
Now I ask you, how can Universes have the same space-time, when different things happened?
Now let's go to different dimensions, there is a dimension below beerus' planet, I call it limbo or emptiness
https://imgur.com/a/yKo4kWJ
In the Brazilian subtitle in Dragon Ball in episode 18 the name of this dimension is shown
https://imgur.com/a/z5KDR6p
Translation
"If they fall, they will go to limbo, with no return."
And yes my friends, the Dragon Ball databook is official and Akira toriyama himself agrees, removing it as non-canon is like denying everything about DB
https://imgur.com/a/fkaoET7
This Daizenshuu, the 7th and final one, is a huge Dragon Ball encyclopedia. I think the staff who make these books always have a rough time of it, but this one looked even more hellish than usual. They really did a great job. I’m ridiculously forgetful, so despite being the author, there’s lots of stuff even I don’t know anymore. It was often quite a nuisance, and I think having this encyclopedia around when the series was still running would have really helped me out. Darn it all.
Anyway, my thanks to the staff, and to all Dragon Ball fans.
— Akira Toriyama
in the novel of the film Dragon Ball Super Broly it is said that the Universe could not handle such energy and sent him to that place, explanation of what the dimension is
Brolly and Gogeta destroyed a dimension named super-dimensional, wanted to discuss this with the team members for what it means for this dimension having the name superdimensional
where is mentioned super dimensional
https://imgur.com/a/oBvN5Br
Hermes said about the super dimensional dimension
"It's a type of place that doesn’t exist in reality, like an alternate dimension"
right here that is mentioned
https://imgur.com/a/Jeg2xUC
https://imgur.com/a/3q9N5Al
dimension source
https://twitter.com/Herms98/status/1041125365278633984?t=NXCMVCrVrswY4tfS-Mpdsg&s=19
right here on the official website of DB talks about the dimension
https://imgur.com/a/3T3XcEd
Here exactly talks about super dimensional images what should be talking about the dimension
https://imgur.com/a/5WZ4Pda
and here confirms that she is a super dimensional dimension
https://imgur.com/a/oBvN5Br
website where he talks about dimension and how it was made, also how they created a movie
https://dragonball.news/news/dbmfl28.html
dimension they destroyed
https://imgur.com/a/tSZZzVT
Now let's talk about the databook itself stating about the afterlife, which is separated into four parts (I got these reasoning from Null, only these parts)
The World of the Dragon (general)
The [Dragon Ball] world has a peculiar worldview: the macrocosm is divided into four areas, the afterlife that takes care of the macrocosm, and the Kaioshin Realm that surrounds the perimeter of the afterlife and the macrocosm. We will introduce you to the countless eye-opening worlds.
https://web.archive.org/web/20111104071315/http://kanzentai.com/trans-daiz04.php?m=03&id=field-other#link#:~:text=The DragonBall world holds %20a%20quirky%20worldview
The world
In the Dragon Ball worldview, there is the Hermetic Universe, and there is the Demon Realm that takes on the appearance of the reverse side of that.
https://magikarp46.com/dragonball/guidebooks/07-worldview.php#:~:text=In Dragon Ball's world-view, there is the airtight universe, and there %20is%20the%20Demon%20Realm%20that%20takes%20the%20appearance%20of%20the%20reverse%20side%20of%20that
In the world of Dragon Ball, the universe is located beneath the World Beyond, and is hermetically sealed by a barrier engraved with a strange design.
https://magikarp46.com/dragonball/guidebooks/07-worldview.php#:~:text=In the world of Dragon Ball, the universe is located beneath the World% 20Beyond,%20and%20it%20is%20hermetically%20sealed%20by%20a%20barrier%20that%20is%20engraved%20with%20a%20strange%20design
demonic realm
It is a place that the eyes of the Kami in the World Beyond cannot see; little is known other than the fact that wicked life forms live there.
https://magikarp46.com/dragonball/guidebooks/07-worldview.php#:~:text=The Devil Realm is a unique place within the Living World. It is% 20a%20place%20that%20the%20eyes%20of%20the%20Kami%20in%20the%20World%20Beyond%20are%20unable%20to%20see;%20little%20is%20known%20other%20than%20the%20fact%20that%20wicked %20lifeforms%20live%20there
It is 魔界, demon world/realm. I think Viz uses "plane" to emphasize that it's some sort of alternate dimension rather than a planet. They used it for Yu Yu Hakusho [also.]
https://twitter.com/Herms98/status/1381776815295897602?t=EbMXpk-D9xATo7YyDjPuiA&s=19
A world in a dimension on the other side of the "universe", which is the world where people exist. It's different from "Hell"; it is a world confirmed to be in the World of the Living. However, magic has greater influence than science.
https://magikarp46.com/dragonball/guidebooks/07-worldview.php#:~:text=A world in a dimension on the other side of "the universe,% 22%20which%20is%20the%20world%20where%20people%20exist.%20It%20differs%20from%20%22Hell;%22%20it%20is%20a%20world%20confirmed%20to%20be%20in%20the%20Living% 20World
Another World (generally)
The Cosmos: A supernatural realm presided over by the [gods.]
https://twitter.com/Chosen48005222/status/1355149987529830402?t=q1In57z4zsK5qT-IF_9KZg&s=19
High above the heavens and unknown to humans, there exists this extra-dimensional world of divinity, from which the gods look down on the entire mortal realm.
https://twitter.com/Cipher_db/status/1355360261775867907?t=UsFkN7ujQRvLpLSW9fyFlA&s=19
A spiritual world where there are souls who have lost their physical bodies.
The World Beyond, a location also called the Celestial Realm, can usually only be accessed by dead people and Kami.
Each area is in a top-down locational relationship. And from Hell to Enma Realm, free movement is impossible, and only by special methods is it possible to go from Enma Realm to Kaiou Realm.
https://magikarp46.com/dragonball/guidebooks/07-worldview.php#:~:text=The World Beyond, a location also called the Heavenly Realm, can generally only %20be%20entered%20by%20dead%20people,%20and%20Kami
Ordinary lifeforms cannot travel freely from the World of the Living to the World Beyond. The only way to go is by turning into souls after death. However, there are some who are allowed to travel by the Kami of the World Beyond, though they are few in number.
He can come and go between the planets of the underworld.
https://magikarp46.com/dragonball/guidebooks/07-worldview.php#:~:text=Ordinary lifeforms cannot freely travel from the Living World to the World Beyond.% 20The%20only%20way%20to%20go%20is%20by%20turning%20into%20souls%20upon%20death
He can come and go between the planets of the underworld
https://web.archive.org/web/20111104071121/http://kanzentai.com/trans-daiz04.php?m=02&id=race#link#:~:text=He can come and go %20between%20the%20planets%20of%20the%20lower%20world
An art whose use is limited to only a select few among the people of the Celestial Realm. Using this art, they constantly observe the situation in the lower realm.
https://web.archive.org/web/2011110...daiz07.php?m=04&id=attack_d-f#far-seeing_arts
Kaio Kingdom
The extent of the Kaiou Realm is unknown, but in the vast scope of the World Beyond, three other Kaiou Planets float just like the North Kaiou Planet. Heaven and Planet Dai Kaiou are also contained within the Kaiou Realm.
https://magikarp46.com/dragonball/guidebooks/07-worldview.php#:~:text=The Kaiou Realm's extent is unknown, but in the vast scope of% 20the%20World%20Beyond,%20three%20other%20Planet%20Kaiou%20float%20just%20like%20the%20North%20Planet%20Kaiou%20does
kingdom of yemma
The world around King Enma's palace. Bound for heaven or hell, a temporary holding area for souls not yet determined. Its exact dimensions are unknown.
https://magikarp46.com/dragonball/guidebooks/07-worldview.php#:~:text=The world around King Enma's palace. Heaven-bound or Hell-bound, a %20temporary%20waiting%20area%20for%20yet%20to%20be%20determined%20souls.%20Its%20exact%20dimensions%20are%20unknown
Kai's Holy World
A separate world that revolves around the afterlife and the entire universe as a satellite to research them. It's impossible to get here except by teleporting.
https://web.archive.org/web/20111104071315/http://kanzentai.com/trans-daiz04.php?m=03&id=field-other#link#:~:text=A separate world that %20revolves%20around%20the%20afterlife%20and%20the%20entire%20universe%20like%20a%20satellite%20in%20order%20to%20survey%20them
The world where the Kaioushin, the highest-ranking beings among the Kaiou, live. Its scope is about one-tenth the combined space of the World Beyond and the Living World. Endlessly revolving around the circumference of the World Beyond and the Living World, they watch over the entire world and maintain balance.
https://magikarp46.com/dragonball/guidebooks/07-worldview.php#:~:text=The world where the Kaioushin, the highest ranking beings among the Kaiou, live
All lifeforms except Kaioushin, and all souls, cannot enter the Kaioushin Realm. The only ways to visit the Kaioushin Realm are by borrowing Kibito's power, or coming via Shunkan Idou.
https://magikarp46.com/dragonball/guidebooks/07-worldview.php#:~:text=All lifeforms, other than Kaioushin, and all souls, cannot enter the Kaioushin% 20Realm.%20The%20only%20ways%20to%20visit%20the%20Kaioushin%20Realm%20are%20by%20borrowing%20Kibito%27s%20power,%20or%20by%20coming%20via%20Shunkan%20Idou
To sum it all up: The Otherworld is a transcendent spirit world - hermetically isolated from the World of the Living, a lower realm compared to them, and completely blocked off from the World of the Living, with only the dead and those allowed by the gods. be able to access it. The only reason the "extra-dimensional" and "higher realm" jargon was created was to drive home the point that the Otherworld does not operate under the same space-time continuum as the World of the Living - this statement is utterly silly. . Not only is the Otherworld considered a world beyond the World of the Living, but they are stated countless times to be completely separate from the World of the Living - dimensionally sealed, by the way.
The sub-realms within the Otherworld are also separate from each other to some degree. It is impossible to travel freely between the Yemma Realm, a dimension of unknown size, and Hell, and only by special methods such as teleportation or divine transport is it possible to reach the Kaio Realm.
The Living World is the dimension that contains both the Universe our cast lives in and the Demon Realm, an alternate dimension that not even those from the world beyond, Kaio, can perceive, and which operates on a different set of laws than the Universe of ours. cast. based on magic. As magic has a much greater influence in this realm than actual science, it's safe to assume that this dimension also operates on its own space-time continuum, or whatever the mystical-demonic equivalent of one is, much like the Room of Spirit and Time (and by extension, Whis' training dimension), which also contains its own diluted space-time continuum, albeit on a smaller scale, in which time flows much faster than it does in the outside world.
This final text is from @Nullflower
yes, my friend, the Universes are space-time separated and it has been shown that there are multiple space-times in Universe 7
right here if you didn't understand the ending