[airair]

What actions make the lagging clubhead takeaway not compatible with the right forearm takeaway ?

I don't know, but I can come with my thoughts ...

If we consider the MacDonald exercises, the takeaway starts with the feet, L knee and clearing of the R hip. So far this could have been pivot controlled hands. But since the hands want this to happen and immediatedly gets to work, it is still a hands controlled pivot. But the club is not picked up as the first move. The work starts from the ground up. In that respect the club is dragged up by the pivot and then the hands and that's what also happens in the downstroke.

One difference may be that hitters carry the club back, not so much drag. In that respect maybe LCT is more suitable for swingers and RFT more for hitters(?)

But I hope the big guns - like OB Left and Daryl and others would shed some light on this matter...