Please explain the bolded portion above.
More connected is the upperbody following the lower/torso body. Not allot of slop in the sequence. You could force connection, make the hands go along for the ride, by creating the box and just turning the box. Mankin called connection transfer mechanics. It was this idea of transfer mechanics that lead to the idea of connection. There is nothing wrong with the idea of connection. The hands/barrel following the lead of the hips/torso with little slop or independent actions created within the swing.