lampropeltis

I am listening on Audible, so admittedly i may have zoned out for a few hundred pages, but, last i knew Dalinar had Szeth's Honorblade (Nightblood), but then Szeth ends up with it when he is "Reborn" (Mostly). Nightblood references Vasher, so i am confident it is the same sword he lost back when Kaladin "killed" him. What did i miss here between Uretheru when Dalinar hid the blade and page 865 (hardcover) Ch.90 "Reborn" (yes, i also have the book). Sorry if this question has been asked already.