I might be in the minority here, but my GP not only knows about my therapy, she communicates with my T a few times a year - they collaborate as much as possible to ensure I'm getting the best all-around support possible. My depression meds are all monitored by my pdoc, who also checks in with the team whenever there is a med adjustment. I don't know, I am glad that they all communicate, it makes my life easier knowing they're all aware of what's going on.

Don't get me wrong, I don't talk with my pdoc or GP about the contents of my therapy, that stays with T and T only. But as my health is impacted by my depression, it's good for me that they all talk.