I just saw a video of Wembanyama dribbling between Bullock Jr.’s legs, and I’m kind of curious as to why a defensive player doesn’t just box out in this situation? It seems like less of a struggle to just turn your body and box out the offensive player, claiming the ball is now loose, and I was wondering if there is some NBA rule prohibiting this.
What you’re describing is a blocking foul. A defender cannot possibly swing around quick enough to beat the ball handler to the spot to be in a legal position, and so it would be illegal contact impeding the ball handler.