bantamben1,
I didn't tell you that - In a Right Arm Swing, the right forearm is fanned through Impact just as Tomasello teaches. But on a 3-barrel Left Arm Swing - any attempt to add right tricep thrust will interfere with CF and nullify it. I can also hit hard with the right side in a Hitting procedure.
Nelson, a 4-barrel Hitter according to holen1, uses Pivot Thrust as a launching pad for Hitting, BUT, he is NOT using CF in such a way as to add thrust to CF. Sorry, it's not additive, but preemtive. Any player who uses CF and switches to Right Arm Thrust between release and separation is getting ONLY the thrust and CF is totally overridden.
Ask holen1 if 4-barrel Swinging exists.