Originally Posted by
Jennestia
XI's WoTG used Atomos as a plot point to explain why things were possible and what's happening if some are going to speculate the "we're just living in an Echo" type route, since Atomos is a temporal summon and we are said to have some. affinity for communing with a primal. Since they're having Primals as a plot point in this game, someone summoning Atomos could drastically (Atomos/X-zoning has always been a part of FF when it comes to to stuff like this, not just XI, it's just XI is the most recent incarnation of that.)
So it doesn't actually complicate anything and it does actually flow with how Yoshida wants summons in 2.0 to actually change the environment in a way when they're present.