Now the question does RIchmond even want his district diluted?
D+25 to lets say D+18 isn't diluting lul. Nobody needs a 60% AA pop seat except perhaps in Mississippi these days, districts with that level of BVAP were struck down in NC. As long as he can easily survive a primary I assume he will be happy, which probably needs at least say a 10% gap between AA and Whites, which is easily achievable. Whites after all vote between the D and R primaries whereas AA's are solely in the D primary.
I was actually able to create a map in MS with 2 black districts, though both only have plurality, not majority-black VAPs and populations:
https://districtr.org/plan/103583. The 2nd, 3rd and 4th aren't too compact, particularly not the 2nd and 3rd, but nonetheless, I think it could happen and could produce a 2-2 map.
Edwards should remember he has veto power and they don't have the votes to override. He can hold out for a 4-2, I think, or at least a 4-1 with one dicey seat.