If two punches collide in mid-air (one with 50N of force, one with 60N), what is the actual reaction force felt at the knuckles?

I’ve been having an argument about Newton’s Third Law and colliding forces on a frictionless surface, and I need a sanity check. Say Person A throws a punch with a maximum capability of 50 Newtons, and Person B throws a counter-punch with a maximum capability of 60 Newtons. Their fists collide directly in mid-air. Newton’s Third Law says that every action has an equal and opposite reaction, meaning the contact force at a single point must be perfectly equal. But if both people are giving it their all at that exact millisecond of impact, what actually happens?