Yes I was gonna say having this scene at this time in the game makes it seem like he already knowsNone of us have seen the ending to Rebirth yet.We don’t know if his denial is a constant thing. He may be flitting back and forth similar to his headaches. I don’t see how we could have Icicle Inn, Great Glacier and the first visit to the Northern Crater and have any coherence at all if he’s literally talking to “Aerith” and no one else sees her. My guess is there is some denial some of the time.
she’s dead. Or at least suspects it. And makes it seem like her death will be dealt with early in part 3 rather than having her force ghost with us for half the game.