Except if he 'fell' because his leg slid along on top of Dunk's, he would just have slid sort of forwards - leg/body first in the direction he and Dunk were travelling. Instead he stopped then collapsed as if shot. Quite comical. As soon as I saw it, I thought 'Dive' - just by the way his body moved.The refs aren't allowed to do that on the basis of a VAR review. Personally wouldn't label it a dive either, I'd lose balance as well, just a non-penalty.