My BF and I have already beaten the Heavensward storyline where we are getting the scions slowly back and just encountering a certain group of warriors.

I have a question/statement regarding the questline for Dragoon. If we finished the story up to the point where Estinien becomes Nidhogg, then how the heck is he standing here talking to my BF's character like nothing happened?

Is this a contradiction? We've encountered several quests where the NPCs say different things depending on what you've done or have already met.