Hmmm. He is better about not keeping things to himself he’ll need a reason to talk about some of these scenes. Sora seeing them would be enough though, I think. Sort of like, well he saw them so I guess I should explain.

I guess least likely would be telling Sora why he left his friends, yeah. Just because he does regret not telling them so he knows his death likely hurt and confused them. Even Aigis didn’t know. So Sora seeing that would be enough for him to be like “...alright” and spill the beans.