well, they're speeding up the series to a close kaya condensed na timeline, suspend mo muna disbelief mo sa part na yun LOL
they were afraid to cross initially kasi the ice will crack but since substantial yun time dumaan kumapal na uli yun ice enough for them to cross
natawa din kami ni Mrs, sabi nya dumaan muna Night King sa Home Depot at kumuha contractor to dive for the dragon, LOL
from this point forward, I'm sticking to that theory the Night King passed by Home Depot North of the Wall LOL