I'll start to help, but understand that I'm not an authorized source.
However, the following is right out of the book.
Firstly, you must understand that paths are for hands and lines are for clubhead and forearm. So that makes your first few stated assumptions incorrect. That should answer some of your questions in the following.
A straight line delivery path holds the hands on a line from the top of the line
position directly at and through the aiming point. No plane shift.
An angled path is for a plane shift; a nearly vertical path of the hands down to the elbow plane followed by a straight line at and through the aiming point. Hands we're talking here, not clubhead.
The above has nothing to do with cross-line or on-line, which refers to delivery of clubhead and forearm. More on this later.
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Hi Loren, thanks for your reply but this quote states that paths (ie. of hands) are related to the concept of being cross-line or on-line...
7-23. POWER PACKAGE DELIVERY PATH
The three possible paths of the Hands down the Inclined Plane (10-23) are the Basic Delivery Procedures and the Delivery Line Equivalents (2-J-3) must comply with them. Per 2-J-3, the LINE Delivery Paths are "Cross Line" procedures and the CIRCLE Delivery Path is "On Line" in their relation to the geometric Plane Line.
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