Hmm, i'm not sure boundaries and emotional distance are the same thing, but in terms of emotional distance, I see it mostly how CantExplained CouldExplain it.

My LCSW CBT therapist was very distant, but my last T, who was a psychiatrist/analyst, was very warm (he's the one I discussed on my last thread). Current therapist is a psychologist/analyst, he is lovable too but much more distant than my last one, the psychiatrist.