THE CW: Tonight on Superman & Lois, we find out if the Two Worlds merge, which is a bad thing, or if Superman prevails. And of equal importance; we learn how, and if, the show is part of the Arrow-verse. Which has been the biggest question since the show began. Because while this version of Superman was initially touted as a spin-off, None of the Superheroes from the other Arrow-verse shows have been acknowledged or even mentioned. So tonight is the night we find out why.