For example, in Anos profile:
Multiverse level+ via <Egil Grone Angdroa> (Extreme Hell World Destruction Ash Magic Mortar <Egil Grone Angdroa> unleashes apocalyptic flames that burn, destroy and reduce everything to ashes. It burns what should not be burned, destroys what should not be destroyed, and reduces the entire universe to ashes. It only has the form of a flame, but is actually a completely different thing.
[138] If the apocalyptic flames are not controlled, it will destroy hundreds and thousands of universes.
For non-supporters, this does not like a 2-A feat at all. There should be a more added explanation that a universe contains an infinite timeline as the OP has suggested. The feat above only talks about destroying hundreds of universes, which still sounds like a 2-B feat on its own.