A few comments before Lynn answers. When I cut the video I misnamed it Hitter’s Row when I was really thinking Murder’ers Row after the 1927 Yankees, because in the clip, Ted is using a Hit Stroke Pattern and Lynn is using a Swing Stroke pattern.
Lynn was more than likely using 10-18-A Standard Left Wrist Action and going to the End, 10-21-C, the assembly point of the Power Package for a Swinger.
I would also think Lynn uses 10-16-C, Right Knee Anchor. It is here that controls Hip slant.
I would say Lynn has no secrets as everything is from the book and Mr. Kelley and generously taught over the years through online posts and lessons.