It's cannon assumed that Casper and the David we've met are not from the same dimension.
But was that confirmed in cannon?
It's presumed that the dimension in chapter 33, 35, 36, 37 is none of their home dimension. But I don't remember any testing to really confirm it.
The only one who has confirmed different life events is Ava, because that dimension's Ava went looking for the diner while still working for the think tank.
I don't remember anything coming up that makes it impossible for it to be anyone else's dimension.
This David could be Casper's David.
I don't need them to be.
What occurred to me is that Ex's little sisters figured out a way to test if people are from the same dimension. So it is a question that could eventually be answered.
Also, if they're not from the same dimension, want Casper and David to compare notes and see if there are any differences. Just 'cause.
Is it mare satisfying if Casper and Ava are from the same or different dimensions?

















