"I'm with Len Scrivener who said and taught that the second quick on a Feather is on the descend. He actually wrote that the book is wrong."
Apparently Len, and definitely most ordinary dancers misunderstand the book on this subject. Rise and fall does not uniquely determine altitude, rather it is one of a number of actions that affect altitude. The source of confusion is that change in altitude due to leg division is not included in "rise and fall". The timing for rise and fall for the feather makes sense once you understand that it applies to action of the feet, ankles, and kness - but not to division of the thighs.
"I'm sorry but you wrote earlier., and contradicted that the feet at some time are under the body. We don't step wide of our body, so where do they go if they at some time are not under the body. A time warp maybe."
The feet most certainly pass directly under the body, but they do so one at at time. The feet must never collect or pass each other directly under the body in a lowered position, otherwise you will get stuck. To sustain easy motion, the body needs to already have projected slightly past the standing foot before the moving foot passes it.