Quote Originally Posted by Caitlyn View Post
How is this possible?
Different chronology - Tam-Tara HM "happens", whether you do it or not, in ARR. The deep dungeon belongs to Heavensward and therefore, everything in there happens after ARR.

It's how you can still go and do the ARR Dragoon questline while Estinien is, uhm..."preoccupied" in Heavensward. The questline "happens" in ARR, regardless of when you decide to do it and newbies more or less will have to piece that together themselves.