"When Bran reunites with Sansa at Winterfell (S7 EP3) he very clearly does not embrace her back when she is hugging him (we see a view that shows his hands remain by his side)," he explained on the site . "In fact, while Sansa hugs him he stares blankly beyond her (which yes, I recognize is kind of his thing to do now). However, when he reunites (S7 EP4) with Arya he does hug her back (a view is shown with his arm around her), and while his face is still blank-ish, there definitely appears to be a hint of concern as he stares over Arya's shoulder at Sansa (who looks down)."