Time is Running Out for the Ascian's Plan?

[Kuroka]

That is a quite interesting question though, the flood did already start when they came over? or was close to it? it seems when they came to our world, barely any time passed as they "vanished" a 100-whatever years before we arrive at the first, shortly before the flood came. Yet the tower should have arrived around the same time? or was he much later? (i gotta re read some stuff...)

[Iscah]

That is a quite interesting question though, the flood did already start when they came over? or was close to it? it seems when they came to our world, barely any time passed as they "vanished" a 100-whatever years before we arrive at the first, shortly before the flood came. Yet the tower should have arrived around the same time? or was he much later? (i gotta re read some stuff...)

The timeline for the flood itself (from the perspective of the First) seems a bit vague as to how quickly it happened, though it definitely seems likely that moving to the Source bought them some time if they could spend weeks there while only a fraction of the time passed for the First. It must have been on the brink of happening, because that was the point of Elidibus's plan, or at least what he told them of it: that there was an urgent need to rejoin the First before the flood ruined it.

According to Moren, the tower appeared "less than a decade" after the flood. That doesn't really figure into any other timeline stuff though - he's coming from the far future, so it's only a matter of how far back he travelled and where he landed.