well, the guy's got to get his work in. I've tried training at the pace and intensity that I need to while training someone else (my dad and a co-worker) and it messes up your pace and focus when you have to stop and point out details to someone less experienced than you.
I can't help you here except to tell you that maybe you should be doing what he is doing if he is as developed as you say. show up to train, eat with him, keep trying to pick his brain and show him you're truly motivated. whenever he's convinced that you're serious, maybe he'll spend a little more time instructing you.
does he chat and bs with other people at the gym? he might be the type that gets really focused, doesn't bs, gets the work in and doesn't pussyfoot around.
in the meantime, this site and its experienced members can help you with your questions.