On the Unsundered [Contains Endwalker Spoilers]

[Loggos]

I think I vaguely recall that Elidibus left Zodiark's body to act separately from him again? I have no idea how this is possible and whether this means he was still a primal (I think they said he still is...?) or whether he became a normal Ascian again which as a consequence left Zodiark heartless.

But I believe the story said some form of separation had taken place before the sundering and Elidibus had joined Emet-Selch and the others to help them/work with them again.

[Alenore]

I think I vaguely recall that Elidibus left Zodiark's body to act separately from him again? I have no idea how this is possible and whether this means he was still a primal (I think they said he still is...?) or whether he became a normal Ascian again which as a consequence left Zodiark heartless.

But I believe the story said some form of separation had taken place before the sundering and Elidibus had joined Emet-Selch and the others to help them/work with them again.

Elidibus did leave Zodiark when Ancients weren't on agreement on the course of action post-Zodiark, since his seat was to be the Emissary and pretty much solve internal conflicts. He still was pretty much a primal.
I meant that as "using Zodiark to save themselves" wouldn't really work since Zodiark himself was sundered : if he could save himself, he would have, I think. Except if the fact that Elidibus left pretty much rendered Zodiark powerless to make decisions.