Call of Duty: Modern Warfare Multiplayer with Two People on Xbox Live

Yes, two players can team up online in Call of Duty: Modern Warfare (2019) on Xbox Live. Here's what you need:

• Both players need Xbox Live Gold (or Game Pass Ultimate, which includes Gold).
• Both need a copy of the game (no split-screen on modern CoD).
• Form a party (Guide → Parties → Invite) → Choose mode (Team Deathmatch, Domination, Kill Confirmed, etc.) → Search match.

Caveat: Some modes have minimum player counts (e.g., Ground War needs more). You may not always find a match with just two, but standard 6v6 modes work fine.