Well, even on my very first sleep study back in 1994, I got a good education from the tech who was hooking me up and I've observed that happening with techs at other labs. But given the way we're hooked up, that might not count as "face to face"!
Luckily I've had the privilege of doing this numerous times with sleep techs I've known whether it be at AWAKE meetings or after.
I've been privileged to be active in the field of sleep apnea awareness for a long time and know a fair number of sleep technologists - I even took a week long course on becoming a sleep tech back in 2003. As you may know, I now represent the "public" as one of the directors for the Board of Registered Polysomnographic Technologists.
What I find to be more rare than talking to the sleep tech is the folks who have ever had an opportunity to talk to a sleep physician!