So, "what do you mean by unique?"
I think every interaction and relationship is unique in many ways, Ts included. If they did bigger things that really stand out, it would not go well with me though. Both of my Ts said/did small things that I thought they did not belong to therapy, they were not offensive per se, but not how I want a T to interact with me. One of the even claimed one of those things as "special treatment" and I told him straight away that I don't want anything special from him. He also said a couple times that he thought I was like no one else he met, unique, etc. Did not like those either and gave a rather cynical response to it in the moment.
I still think that there are plenty of things in every interpersonal interaction that are unique, so probably not that "unique" after all?