Every day I wake up relieved that the fans arenβt the ones writing Star Wars because I swear you guys want everyone to die.
Cody not being in Rebels doesnβt mean heβs dead. Echo not being in Rebels doesnβt mean heβs dead. The rest of TBB not being in Rebels does not mean theyβre dead.
A million and one different things could happen to Rex between TBB and Rebels to make him isolate himself. He had a PTSD flashback to the clone war in Rebels where he said Codyβs name because Cody is who he spent the majority of his time with back then.
Is it possible that theyβre all dead? Sure. But someone left a comment under a post of mine a while ago quite correctly pointing out that this is a kids show, not Game of Thrones. Thereβs probably gonna be some deaths here and there, there isnβt going to be a bloodbath. Itβs honestly just fearmongering at this point. I donβt know why major character deaths are the only theories people come up with.
It is a big galaxy and there are so many different branches of the Rebellion. They could all be literally anywhere. If Rex and Ahsoka are capable of spending long periods of time apart from each other, thereβs absolutely no reason why the same doesnβt apply to his brothers and Omega.