Can you do that?
Yes, warzone supports crossplay.
You have to see if you can somehow connect your Activision accounts or make friends. It supports crossplay, but you have no way to invite. So the only way is through your existing Activision account. You have to link up there so that you are visible in the game for each other.
According to gamestar.de
How do I activate Crossplay for CoD: Warzone?
Crossplay can be easily activated and deactivated in Modern Warfare. Go to the options menu, look for the Account tab and change from Enabled to Disabled. By the way, matchmaking prefers your respective platform. If you are traveling solo with a mouse and keyboard, the game will only match you with Konsoleros if there are not enough PC players available for a lobby.
Can I open a party with friends on a console?
With the Activision account, you can open a party or clan with friends across platforms. If you want to meet up with your buddies on the Xbox as a PC player, that's no problem. Matchmaking will then no longer prefer PC lobbies, but will be stuck in mixed games.
PS: Crossplay is people playing on different consoles
