I think if we're supposed to be thinking/doing something then T will be more pro-active, will tell us, "I want you to think about. . ." But thinking is not "controlled" by us like our actions are, things pop into our head at their will, associations, etc. I think your T was just asking a straight-forward question, seeing if your discussion had caused any odd associations or continue-on thought.

When we talk about or concentrate on something, consciously or unconsciously, it will often stick around. That's how we get most of our dreams I think; I use to love having my T session on Friday and then going to sleep Friday night because I knew I'd dream about something we'd been working on that would help me further.