Blah blah blah ... a whole lot of words thrown my way on one comment taken without its true content. In no way did I ever say or infer that elite coaches only need to look them in the eye. You seem to be stuck in a yes or no, this or that, black or white do loop. If I was standing next to you I would slap you in the back of the head to get you unstuck (of course, then I would run until you tired out because I promise you could never catch me ... I go all day). Your ridiculous point is founded on the idea that I am saying a coach needs no tools other than his eyes and his voice. That is stupid. If I wanted to go down the hyperbolic hole you are digging, I would counter that what you're saying is stupid because you seem to think top coaches are only looking at their spreadsheets, gleaned reports and gantt charts to make their athletes great. That is just as stupid.
If you are going to coach a team, you HAVE to know the athlete. You have to understand how they live and tendencies. You need to know what their normal behavior is so when something seems wrong you know. That is what I mean when I say look them in the eye. Then, and only then, all the data being collected helps paint the whole picture about the current athlete's form. Then you understand when an athlete is 'straining' and grinding, and the wrong move is to lighten the load or shorten the distance ... or ... when the athlete is doing damage and its time to deload a bit. You know if their low heart rate and low variability is vindictive more of the stress of their life (failing a class ... girl issues ... drinking/partying) or its because they have been grinding and tired.
HRV is secondary data and doesn't really drive decisions ... it just confirms or denies it.
And by the way ... like I said before ... tour the facilities and working in them isn't the same thing so stop throwing that around like it means you are a freaking expert at training athletes. Training people is training people and I have been doing it for my entire professional life.