[airair]

Rythm was in TGM terms, i.e. "synchronised", or maybe more accurate "correctly sequenced", so no specific acceleration of the hand independent of the body for a swinger (but of course the whole body-arm-hands bundle do accelerate from Top to impact).

In Swinging, the arms are pulled from the left shoulder (#4 pp) that turn via pivot action, that the natural choregraphy of body parts for a swinger.

Usual caveat: that's based on my understanding of the book and of the informations here, I haven't seen an AI.

Thanks to both you and ICT. This has been an informative day.