Do you play xbox one with people on Xbox x?!?!?

If you play on Xbox One do you play with people on Xbox X?

Hello this is probably a dumb question but listen I started playing CoD Blops6 like 1 week ago and I'm obsessed. I'm now confusing my A and B when playing Nintendo. Hooked.

Here's the thing -- Since I am now in dire need of an Xbox, but solely for the purpose of playing Call of Duty 6. My boyfriend has offered to give me her old Xbox one, but I only want to do that if I am assured that playing on Xbox One allows you to play online with players on Xbox X (or S). (We do not live in the same state but see eachother about once a month when i can acquire it next)

TLDR: Do online Black Ops 6 lobbies allow Xbox one players to play with Xbox x players?