I've only just started with T; I've had three sessions. So IDK. But I imagine he discusses his patients with his wife, just like my wife might talk about a few of the patients at the walk-in clinic.
I could imagine going to his funeral (after working with him for 6 months or so) and introducing myself to his wife as the nature-loving engineer who started out Catholic, switched to Lutheran and then became Buddhist. But this would be only if encouraged to attend.
BTW, my daughter's T attended her HS graduation; he attended the graduations of a few of his child clients. So there seems to be some crossover into "Real Life."