We almost had a Doom and Halo crossover, but Xbox apparently said “nah”

Master Chief and the Doom Slayer almost came face to face in a crossover I didn't know I wanted until now. The embattled first-person shooter icons, the former of Halo fame and the latter from Doom, were part of a pitch for the Amazon Prime anthology Secret Level, but powers that be at their parent company Microsoft quashed the idea. Boo!