[dlam]

I would rather say: Loose the synchronisation and you loose the swing. The connection can be tight or loose or almost absent as long as you manage to swing your arms with the pivot and not swing your arms around the pivot.

Bernt, synchronization is a better term than connection.

After review, it seems to me with rotated shoulder turn the PP#4 can be felt at the top of the swing......this would be for a lagging startup at adresss, however in the past few weeks I have been experimenting with impact fix for swingers and that involved a turned shoulder and PP#4 felt at address.
It was working well until I got "tired" and started to have zero pivot.
I now see why some players go between lagging takeaway and impact fix start up. Some days its just easier to reach "impact conditions" in the backswing rather than adjust it during address.
It is my belief that one needs more precise alignments to be at impact fix than non-adjusted address.