I guess my point is that when you cock the left wrist (move it up and down), the right wrist must also cock (move up and down).
When you bend the right wriste (move side to side), the left wrist must also move side to side.
If both hands are on the club, I do not see how it is physically possible to not cock the right wrist, and not bend the left one.
Try splitting your hands on the grip. Keep the Right Wrist Level and bend your Right Elbow. Your Left Wrist will Cock and your Right Wrist will remain Level if you allow it to.
The Right Elbow Cocks the Left Wrist. Now just slide your hands closer together and do the same.
This is a KEY G.O.L.F. alignment that is the Right Forearm Flying Wedge and its LEVEL Right Wrist that DOES NOT COCK.