[bots]

Originally Posted by Toy Soldier

The theory I've seen is that the NK was only vulnerable when next to the three eyed raven tree / Bran himself (something about being tied to a magic tree when he was created?) and so Bran actually knew all along that the NK had to be lured to the tree at just that moment, and knew that Arya would kill him, so he actually was "doing his thing" just by making sure that the timing was perfect and everyone was where they were meant to be, when they were meant to be there. Sort of like the Lord Of Light repeatedly resurrecting Beric because he was destined to save Arya, who was in turn destined to kill the Night King...

if that sequence holds true then Jon will have done his part when he protects/kills someone at the right moment