[Caged Great]

Spoiler!

definitely think the NK has green sight. Makes sense that he would go to that specific place if he saw that doing so would elicit him getting a dragon. As you said, they could have picked them off easily. But he had the bait needed and just had to wait. It will be interesting to see how things shake out next episode. After re-watching the episodes, I think both Stark girls are playing Littlefinger in their own ways. The way LF suggested to Sansa that Brianne would intercede between the two girls regardless and then Sansa quickly dispatching her to Kingslanding makes sense. That way Sansa appears vulnerable to LF, who he knows is always up to something, it removes the piece that he was hoping to play. Also it helps protect Brianne in case she did have to intercede because of the fact that she would be going against one or the other and either would likely be a death sentence for her. Honestly with the pacing of the season,
I wouldn't be shocked if that whole story line gets wrapped in episode 7