Wow! As soon as I took the advice I gave myself yesterday, writing skyrocketed (relatively) from where I was at. I went from trudging in a swamp to walking a paved path. All because I was letting Character B finally be the guy I intended him to be. I had forgotten that the whole point of these boring scenes was with the intention that Character B was going to spice things up with his attitude. Some consequences, yes, but I was able to write around them.
With this scene completed, I'm probably about halfway through Character B's storyline. Boss. It only gets better from here on, too.