The contributions from everyone have been super helpful and I have been trying to edit as the helpful hints come in. I think what I am finding is that it is helpful if, as you (and others) have said, it advances and clarifies things. Really appreciate your helpDialog can be integral to any good story.
Others here have said it but it's worth repeating. If the dialog advances things, clarifies things, adds to the story, or the emotion, or the drama, then it's never too much.
If it contributes nothing? Cut it.