People are lumping "HLP by Mike" and "Rich TTB" because he posts videos of perpendicular forearm bat snaps while the bat or other snapping equipment is above the shoulders and next to the ear. He also shows videos of his batter performing these drills in the presence of Rich. It's is not a stretch to lump them together when Mike himself has lumped himself with Rich.I have spent the last 4 years watching and listening to Mike teach, and we have shared a lot of discussion about the swing during that time. IMO, it is accurate to say that this is "HLP by Mike", and is not a direct duplication of all of Rich's teachings.
For my DD, learning how to TTB around a HPP added a quickness to her swing that was not present before. While she significantly improved in her ability to respond to high-velocity pitching, it took her a little while to learn how to control her timing when facing not-so-fast pitching. Once she got that sorted out, things really started falling into place.
While my DD may not be a poster-child for Rich's HLP, she's an example of HLP concepts being implemented and adapted in a way that is unique to her. Likewise with Haley. Both Maddie and Haley have been under Mike's direction for the same mount of time (although Haley has had many more sessions with Mike), during the same time period of their lives, yet their swings look fairly different.
The argument posed by W=W and others is not that the bat isn't perp with the forearm, its not that the bat rotates around the forearm, it is ***THE BAT DOES NOT ROTATE AROUND THE FOREARM BEHIND THE HEAD*** This position of the rotation is clearly being advocated by rich and mike in his drills video that they both have posted (they wouldn't post those drill videos if they didn't believe that is what is happening).
I think if you were to look at the bonds swing and the dicarlo swing posted very recently in the thread, they clearly show the rotation happening below the chin after the initial sequence of the swing (at least it is clear to my eyes)
@Shawn and to label the above argument as a push swing if the rotation happens below the chin shows that you are *seemingly* agreeing with rotation has to happen first and in the position behind the head. I have not seen a live swing where the rotation happens first and in the position of behind the head near the ear.