[possible spoilers ahead]
I've played this before finishing Quaint Part 1 and I've been thinking: what if this Q is Quaint's Q? Q's Q seems heartbroken, still trying to get over his past, so it can be this timeline with T leaving, with this incident leading him to where he is now in his life. With AUs there are so many possibilites!!!
[spoilers here, too]
Interesting theory. ^^ I don't want to say too much at this point, but you're partially right. 😏
This is not so much an alternate universe but an alternate timeline (one where the Organization doesn't exist). And the other Q they're talking about is actually the Q from Quaint. Though what actually happened between T and Q will be revealed in Part Two. ^^
