@davextreme I beleive it's been stated by the creators that Black Lighting is on a different earth, though honestly nothing that's happened in it would preclude it from being on the Earth of one of the other shows, just in some other city.

I'll be really curious to see if they ever bring Black Lightning into any of the cross-overs or if they keep it separate. From what I've seen it's a much better show than the others (admittedly my experience with the other shows is mostly just Supergirl, and the crossover episodes of the other shows) in terms of quality, so I could see why they might want to just let it do it's own thing.