Mr. Kelley identified four separate, sequenced periods of acceleration in Chapter Eight. In order, the chain is #1, Shoulder Acceleration (Start Down); #2, Hand Acceleration (Downstroke to Hands approximately at the Right Thigh); #3, Clubhead Acceleration (Release -- Hands go from Right Thigh to Impact); and, #4, Ball Acceleration (Impact).
On your own, You learned that the turning shoulders must start your Acceleration Train -- not your arms or hands. Properly subordinated, your arms and hands won't get out of sequence and you will have all the "connection" you need.
Excellent response. Chapter 8 often gets overlooked from the aspect of Acceleration and it's four stages .