I'd say we split talking about 50/50--my T can talk quite a bit! But then, I tend to talk fast (T talks more slowly), and I talk a lot when I'm anxious, so I likely get more actual words in. As for silence? Unless, say, one of us is trying to think of a word or an example, there's probably talking going on 99% of the time. Possible brief silences if, say, I'm blowing my nose from crying, but that's about it. And it's been that way with all my T's--with the exception of a few times when I've been upset with them and struggling with what to say, if there's silence, either I'm going to fill it or the T will.