I'm sorry your wrong....the right forearm (the magic of the right forearm) is controlling the WHOLE motion...from start up to finish. The body responds to the action of the right forearm...I suggest going back and re-watch the whole video series...
DG
DG,
Then I'll ask again, in spite of your previous refusals to answer - how does the right forearm move? It has to be from right shoulder flywheel action OR right tricep thrust. There are no other mechanisms available to move the right forearm downplane.