The word I use a number of times in this lesson is “subtle”. Noah has what would appear to the eye to be a technically sound swing. Without a proper analysis (which means video with a stable camera and shutter speed along with the V1 software technology) it would be very difficult, if not impossible, to pick out the right arm and sequence issues that I talk about here. Of course, these are my ideas and preferences as to what proper right arm movement and pivot sequence are, and as I see it Noah suffers from a combination of the two items in the transition area of the swing (left arm parallel in the backswing to left arm parallel in the forward swing) which eventually conspire to complicate and weaken impact.