Attention and respect regarding the timing is one feature out of the many that I really appreciate in my T. We never start late and if I'm a little early, he comes out to get me almost just in the right second. Same for ending, he never appears like watching the time but has a way to end sessions exactly around the 45 min mark in a very natural and polite manner. I recall seeing another client (which I don't mind at all) after me only once but it wasn't because we were running late, she was there early. I appreciate his punctuality even more reading here how many people struggle with the timing in therapy. I am not sure how he spaces clients though in general.