As You Stated and This is An Empirical TRUTH - "I understand that pivot, backswing and forward motion are inter-related.".... All Cars Have Wheels, Motors, Brakes, Etc.... But You Know Damn Well that Your Ford Focus's Wheels, Motor, Brakes, etc. Would NOT Fit on My Honda Odyssey... Sam Snead Sit Pivots.... Because Sam's BackSwing and Forward motion Dictates a Sit Pivot to Execute His Magnificent Swing..... You Do not Have Sam's Backswing or Forward Motion So Therefore You Can NOT use Sam's Sit Pivot..... Have a Great Day....
Unless your backswing and forward motion have the same dynamics as Snead, you can't have his sit-down, and unless you have a sit-down move like his, you can't have his dynamics, and unless your backswing and pivot are like his, you can't have his forward swing, and unless your head isn't shaped like his, you can't have his hat, and unless all elements are like his you can't have a swing like his,and....
Hey, BBilly, know what a "tautology" is? (hint: one thing it is NOT is an "explanation")