Years and years ago he talked at my university lug. I picked him up in my car from the train. The BO smell remained in my car for WEEKS. Dude had a serious aroma.
That was a few decades ago, so perhaps things have changed, but he was well within normal odor back in the early 90s.
A few hours in a row of hearing and typing C-Space C-u 2 4 M-w C-x C-b <RET> C-y C-x C-s is exhausting. It was also amusing (in retrospect) to get a polite-enough admonishment to "don't think about what the keystrokes are doing; please just type what I say" when he could tell that I was slowing down because I was paying too much attention to what the intent behind the keystrokes was.
If I were in either of your shoes (sandals?) in that situation, I’m sure I would be super frustrated all the time. Impressive on both your parts.
I ended up doing 4 sessions totaling about 10 hours and when I told him I was quitting, I was apologetic that I felt like I'd wasted his time quitting so soon after starting. His response I can remember to this day and it was something like "Don't worry about it; most people quit after the first session. You helped me out and we'll make sure you get your check."