This is a very important concept to understand. I know for my golf swing I cannot acheive accumulator lag unless I have Pivot lag first.
So thanks your excellent and succinct description of Pivot Lag.
Don't thank me thank Homer . . . it all starts with the GROUND . . . ashes to ashes dust to dust . . . from the dust you rise and to the dust you return . . . just like your life . . . . your stroke is born of the earth.