With my current therapist - going on a little over 5 years.

I met one therapist for 1 session - that was after a gap of about 3 years from a previous T, and then that one session was followed by a gap of several months before I found my current T. The t I saw for 1 session was just a whack-job and I left shaking my head at her.

I had two T's previously which I saw for about a year and a half each - I quit seeing one because she decided to close her practice (with almost no notice, so it was a bit traumatic) and the other because she just quit being helpful and I didn't connect well with her.