Crossplay and cross-platform co-op are confirmed
Aliens: Fireteam Elite 2 supports cooperative squads of up to four players. The official game site explicitly confirms cross-platform co-op and cross-platform voice chat, so a squad can be organized around roles rather than requiring every player to own the same system.
The supplied official material does not give a platform-by-platform matchmaking matrix or document every lobby setting. Treat the broad cross-platform feature as confirmed, but use the live in-game interface and official support information for platform-pair or account-linking details not stated by the source.
What the Xbox storefront confirms
The current Xbox listing supports single-player plus online co-op for two to four players. It also carries Xbox cross-platform multiplayer and cross-platform co-op capability labels, independently reinforcing the official site's cross-platform claim for the Xbox edition.
Xbox console online multiplayer requires an eligible Xbox Game Pass subscription sold separately. That subscription is a console online-play requirement and should not be interpreted as confirmation that the game itself is included in the Game Pass catalog.
Crossplay voice chat and launch-patch context
Cross-platform voice chat is an official feature. The launch patch fixed a problem affecting voice chat between cross-platform friends, which means an old game version can be relevant when a mixed-platform squad can join but cannot hear one another.
The same patch addressed Xbox invite behavior, a host crash and a crash under certain network conditions. Those fixes do not prove every present connection problem has the same cause, but they make installing current updates a sensible first check.
A practical mixed-platform checklist
Before launching a mission, confirm all four copies are updated, form the lobby through the game's current cross-platform interface and test voice chat before committing consumables or Challenge Cards. If the lobby fails, separate invitation trouble from voice-only trouble so the squad can troubleshoot the right layer.
Also plan class coverage and firing lanes before raising difficulty. T-Pose Games recommends choosing classes for needed squad roles, and its loadout guide warns that friendly fire matters more at higher difficulties, particularly with explosives and wide-area weapons.
