If Wilder gets the belt AJ will lose interest.
Still believe Wilder would KO that bodybuilder AJ.
He won't lose interest. He tried to make the fight happen but Wilder chose the Fury rematch instead. After his loss to Ruiz, he can't afford to play games and is trying to unify ASAP before he loses again.
I do believe Wilder will knock him out if they fought. AJ's style isn't suited to face a bomber like Wilder, he'll get caught and put to sleep
But I also believe AJ would beat the breaks off Fury.