[JackMorgan]

That honestly does happen at first, until you get used to the other person a bit more, then the real speed happens.

Once you really are switching every few minutes, and you learn to trust the other guy to figure that crap out himself, then you can stop watching his semi-colons and start watching ahead for what you are going to do when you get your turn to drive. I have worked with someone like that, and the effect was profound, we would get done sometimes 4-5 days of low bug count, high quality work each day. You have to learn to disengage just a bit and start actually thinking about how his work fits in the big picture, and what you are going to do next, not his spelling errata.