The art lies in being in the flow at an altitude higher than the code. Once you discover that stream that exists at a higher altitude, the flow is even more exhilarating than that at the code level. It is almost liminal.
I time slice between them, have them do a lot more reviews of each other, and spend more effort on thinking about design and checking their code.
I'd argue doing audits and having agents clean up their own slop, then creating instructions / guidelines from those, will reduce the problem long-term. They very much will mirror the surrounding code the code is consistent itself and the core points are called out in a little AGENTS.md