Jump ball or out of bounds?

[hoopguy]

I was working a game at a camp using 3 person crews. Player a1 in transition just over mid court near sideline jumps in the air to throw over head pass. b1 jumps as well and the pass is stuffed. b1 lands out of bounds with both players still touching the ball. We have a double whistle as trail calls out of bounds and lead calls jump.

I have been thinking about this and still not sure of correct call. What would be correct, with rules reference? This was NCAAW but would like NFHS as well.

My thought is that the oob would be correct because you would need to land to get to the jump ball ruling. Of course that was my original call as well, so my bias shows.