It's possible the others blabbed too. Squall hasn't told them yet before he was brought here but after their time together, he would have told them part of it.

Squall frowns when Nida continues, genuinely bothered now as a thought that hasn't occurred to him before settled in. He tries not to think about those memories that flashed before him in the Void but now... Some of those had been of incidents he never witnessed. Memories that should not be. He thought it was part of the Void's effects but what if it wasn't?

"Are you sure? We could be from different timelines?" There's a hint of urgency in his tone and expression, seeking confirmation.