I can't find the reference to the post by Larian, but they already explained it.
I elaborated
here.
From the dialog with the Divine:
As she took on the guise of that courageous woman and showed you a vision of things to come, this sinister empress led you to believe the lie even my old friend Zandalor held to be true: Ygerna’s life is Damian’s death.
Does this not imply that Ygerna was the one who showed you the vision, and was actually pretending to be Talana BEFORE she is actually dead? That text would seem to contradict anyone saying Ygerna gets in your head after the vision, rather than before.
