So, I'm on my third read through, and I noticed a passage in AFFC that Victarion witnesses when meeting with Euron, after the iron born cast doubts on sailing to slavers bay for dragons. He says, "When I was a boy, I dreamt that I could fly, he announced. When I woke, I couldnt or so the maester said. But what if he lied? Sounds a lot like Bran. Could Bloodraven have been sending him visions as well?