Yep, to tell her plan to Jaimie and then let him free so he can join her enemies.
She did that and i have no idea why he just left. After he passed the mountain i thought they'll fight on that map.
They repeated 'Jon must know' so many times that i think it's pretty obvious that he won't, probably til the end of next season.
Winterfell will be gone before Jon and Dany will arrive there and imo the Starks won't meet up.
Yeah, but in the books. Which brings some interesting questions: Did they just combine those two characters (Jon and Griff)? Is Griff not really important in the books so that he was cut out? Will there be 2 Aegons in the books?