Endwalker Main Scenario Commentary & Feedback

[Iscah]

Because of Endwalker, Exarch!G’raha’s timeline also has to have a slightly different past as well since it never had its WoL travel back in time to do a causal loop, because the WoL was dead

This is where things get really wibbly-wobbly-timey-wimey but very simple if you have the right picture in mind.

Our "other self" from the Eighth Calamity timeline does not need to travel back in time at all, and in fact would confuse things for our side of the time divergence if they did. The time loop only happens on our side.

Although the starting point for our time travel trip is after the two timelines diverge, our destination is before the split. What we do there affects "the past of both timelines simultaneously" because they aren't separate things yet.

Therefore it is our presence in Elpis, and ours alone, that is experienced and remembered by the people there.

(Or to look at it another way, if our other self somehow did make it to Elpis prior to their untimely demise, they would be arriving in the same Elpis that we visited ourselves. There is no alternate version of those events.)