I wouldn't know if I don't notice it. So if I don't see it... huh.
I think I can tell, when I watch for hints like if the person is asking questions or adds something to the topic.
Somehow I tend to be overly cautious to not talk about things that bore people - I don't want to be annoying. And sometimes I don't want to spend the energy to talk about a topic of the other isn't interested. So it is the opposite?
When I don't pay close attention, when I feel the urge to tell something, to bring a point across or when I feel like talking about something, when it feels good to talk - then maybe.
What is hard for me, is to establish a connection on a personal level and to really get to know someone. Or find appropriate topics to speak about. But that is not within the frame of the question.