I hadn’t heard of this before - very interesting. I need to reframe a few memories.
I attended a seminar given by Dr. Bandler about fifteen years ago and volunteered for an on-stage demonstration (of hypnosis and some other techniques). I don't remember much, and my subjective sense was that I was up there for only a few moments, but I was told by a friend afterwards that it was several minutes. During that time, whatever he did, I was relieved of a severe depression that had ruined my life up to that point. Let me be clear: I had suffered from years of vicious depression that kept me from living a normal life. It went away and never came back.
It was only later, during a break, when someone told me that it had been several minutes, and that I had flushed dramatically and had other reactions during the process. I have no memory of any of that. From my POV it was just a few moments.
There may even be video available of the seminar. I don't remember the year but it was maybe 2004, the seminar was a week long and in Chicago, and I think it was technically DHE (Design Human Engineering), not NLP, if you want to try to track down the actual incident.
After my depression was cured I kinda lost interest in NLP.