Thanks for that very useful post Scotty. I hope that others will add to this/give their own viewpoint/insights etc.
My guy didn't smoke a bong (lol) but he took at least 7 phone calls in the time I was there. Luckily there was no-one following me, so we went on to 40 minutes, but I found the calls pretty distracting to say the least. Also no attempt to find out what my goals were or even to assess what stage I was at or what knowledge I had - it was straight into a finger exercise. 35 years of guitar teaching experience, apparently!
So - back to the drawing board for me. I like the idea of enquiring with players after a gig - might try that at the upcoming Steely Dan concert
Or maybe not lol.
Thanks again, Scotty!