yesThe term mega verse seems rather stupid, if you have multiple interconnected multiverses...Isn't that just...one big multiverse?
well sort of
What are Cardinal Sets Of Infinity?
I know we use this to quantify cosmologies and stuff. However, I have no actual idea how they work. And searching it up on Google gives me a bunch of scientific shit I don't understand. So someone dumb down what cardinal sets of infinity are.

it is a sort of meaningless distinction in terms of the math, as it’s not necessarily actually bigger than an infinite multiverse would be
an exception would be something like Transformers because it specifically says there’s an “uncountable infinity” of beanch universes for each universe, thus that actually is levels of infinity higher. Other series of course dabble in that and then some, but it’s rare in the greater scheme of fiction
Basically our system kinda makes no sense beyond the multiversal level