"Anonymous. It does say for the man going forward and I will quote . Page 10. At the full extent of the stride..."
Once again you try to pass off the description of a walk action with NO RISE AND NO FALL as being literally valid for a step danced with rise and fall.
It just ain't so. You will never understand dancing as long as you sloppily ignore such key differences.
When the subject is a feather step, if you want a literal description you must find something written specifically ABOUT THE FEATHER STEP, or at at the very least something with a comparable action in the vertical dimension.