Sounds like you meant
invalid, then, lol.
Again, I didn't play through FFT very far, and didn't really get to any of the Ajora stuff, so I was going purely from the timeline, there. But if Ajora can be reincarnated, that would explain why they made it a question ("are they the same person?") in the timeline. Otherwise, it would seem pretty unlikely that they are
not the same person.

It does seem a little odd though that the timeline would mention something apparently pretty major like that that has nothing to do with FFXII and that happens
after it, in that case though. Unless it was meant to tie into a later game/sequel.