Yes, but that wasn't my question. It was whether or not there is an accepted higher timeline because multiple copies of the 12 universes exist. In a layman's words, is the standard here that, when another 12-universe multiverse is made, a Low 1-C timeline must be there connecting both multiverses, including each of their 12-universe encompassing timelines.
Because Multiverses could simply exist independently, without any connecting grounds between them. It could be just void outside.
I was saying that the existence of multiple multiverses does not inherently imply a higher dimension unless shown by the franchise, as there could just as well be nothing between them. If it is a standard here that multiple multiverses = there definitely is a higher dimension that connects them, I agree with the thread.
If there is no such standard I'd like proof that there exists space encompassing and connecting these multiverses before agreeing with the proposal.