Quote Originally Posted by Divinemights View Post
Solstice cannot be prevented, as it is a natural phenomenon that occurs in Hydaelyn’s absence.
It is also somewhat unusual that Calyx responds to Urianger in that moment rather than Halmarut.

One possible direction the FF14 writers could take is to use Calyx’s failure as a turning point.
In this scenario, Halmarut may have originally intended to use Calyx’s “Endless” project to convert all life on the Fourth Shard into Endless beings, then transport them to the First using Azem’s key.
This could serve as a potential solution to minimize loss of life during a premature Rejoining
Assuming such a process could even occur without the involvement of the Unsundered Ascians.

Calyx’s project did, in fact, manage to transport a number of lifeforms from the Ninth to the First, although unintentionally.
After witnessing this result, Halmarut may have attempted to replicate the same process on the Fourth.
This could explain why Calyx pursued the Warrior of Light for Azem’s key in patch 7.3.

However, the Warrior of Light reacts negatively to the concept of the Endless, despite everything Calyx has done.
As a result, she may have no choice but to abandon the original plan and shift to a secondary approach: passively recruiting the Warrior of Light as one of the Winterers in patch 7.5.
This scenario could work, though it may conflict with what has been shown so far in the (admittedly incomplete) 8.0 trailer
I think you mean the source

The first has no relation to the endless project