Sometimes there is just a tiny little thing that is missing and for whatever reason people just missed it. I recall a teacher I had in college that nobody in the class could "get it" but then one day he was ill or something and his teaching assistant graduate student came in and I guess she was more able to understand the mind of being a student because she was one. A lot of people got that missing link of information from her and now the subject didn't seem near as impossible as it was when just Dr. can't-explain-anything was lecturing us and getting increasingly upset as none of us were understanding.

That could have been part of the coaching problem: They were so far removed from actually doing the actions they were telling us to do that they could not longer remember what it was like to NOT BE ABLE to do them.