I sometimes phase out the meanings of words. I forget for a while, that there is a meaning attached to a set of syllables strung together. Then it becomes just a stream of sound. It's soothing, when you don't have to process what the other person is saying. It's wonderful to just let it pass by without hanging on to it, trying to look ahead and plan something - a reply, even - around it.
Yes, I probably have done that more than once when we were talking. No, I don't think it made much difference to understanding your point of view. Your tone says as much as, if not more than, what your words do. Maybe I understand so well because I heard what your words sang out, rather than what your lips said. Maybe I just like the sound of your voice.
Doesn't it happen to you, that the sound of someone's voice makes you tingle? Maybe it was someone you passed by while walking down the road, maybe it was the child with the voice that sounded like the sweet chime of a bell, clear and pure. Maybe that's why I don't speak so much, because I don't have a thrilling voice. It is also why I listen more intently.