Here me out…
So going with Brann into the Delves, filled with gold at the end, and Brann is saying “Here is your cut! 2G 14S 78C.” What in the great Gallywix is this hot garbage?
Also, Brann can’t shoot for his life! Have you ever seen a Dwarf not being a good shot with a gun? I haven’t.
Therefore, we can safely assume that Brann died during Cata, and some random Goblin stole his body as a disguise.
Maybe if the dwarfs weren’t drunk 24/7 they would have figured it out by now.