Hey, you have to explore "know" and how one knows different people and husband versus T, etc. It sounds like a very useful session to me! Because T's are "different" and how we relate to them and what we "know" about their character and about how we feel/relate to them, etc. it can be very helpful thinking about them rather than more "familiar" people (husbands :-) whom we are pretty sure we do know (but they may surprise us, we may not know them as well as we think we do).

I don't think any session with T is "wasted," there's always something to learn and/or a single session is not the whole relationship. Each session is both important in itself but also a "drop in the bucket" of one's whole therapy experience.