The time period is around the Dragonsong quest ending when the series of long cutscenes played.

When Estinien finally ended his quest, a cutscene played, where they said a phrase that I didn't understand well. Estinien was seen with a bouquet of flowers and his weapon but not his armor, walking away, and they said something about Azure Dragoons when Ser Aymeric was riding a dragon back.
So, did the Azure Dragoon legacy ended with Estinien or did Aymeric become the new one? And if not, who's the new Azure Dragoon?
Maybe I just misunderstood tho, and there's no new Azure Dragoon.