>bran says he can see into the past and can see events happening in the present all around the world.
>we see bran look back in time at jon's birth and learn jon's real name.
>cut over to the present, jon fucking his aunt on a boat somewhere.
>bran voice-over during boatsex
The editing implies the boatsex scene was from the perspective of bran's timespace vision. His astral projection was probably standing there in the room just behind the camera's pov. bran's been peeping on incest since season 1. he sniffs it out anywhere in the world now that he's the 3 eyed raven