Everybody laughed at me, but now I've got Thrones Facts on my side. :micdrop:
If you read the comments you will see that the map misses the fact that the white walkers attacked Bran in that cave....What else have they missed that we don't even know about???
It doesn't matter. As I said a few pages back:
Not to quibble (but I guess, yes, to quibble), you all are making excuses for a weak plot contrivance. If Jon has all this time to traipse all over Westeros because the Night King is just sitting around waiting, why does every shot we see of the Undead Army show them marching?
The Night King and Bran's storylines intersect at the Cave of the 3ER. Bran's storyline intersects with Sansa's storyline at Winterfell. Sansa's storyline intersects with Jon's at Winterfell. So this means the Night King is not only moving so slowly that he hasn't reached the Wall by the time Meera/Benjen towed Bran on a sled all the way to the Wall and then on down to Winterfell, but the Night King is still marching to the Wall by the time Jon spends months sailing from Dragonstone all the way up to Eastwatch.
The Night King is moving slower than Michael Meyers. The excuse boils down to "well I'm sure he's taking so long because he's doing tons of other stuff we don't know about, like recruiting."
Besides, we all know the Night King doesn't bother recruiting. Like Snyder, he focuses on development.