Call of Duty: Black Ops 6 Citadelle des Morts ending has clear references to the BO2 Zombies Origins map and the end of the BO4 storyline.
Source: N4G PC Black Ops 6 Citadelle des Morts Ending and BO2 Zombies Origins Relation, Explained
Call of Duty: Black Ops 6 Citadelle des Morts ending has clear references to the BO2 Zombies Origins map and the end of the BO4 storyline.
Source: N4G PC Black Ops 6 Citadelle des Morts Ending and BO2 Zombies Origins Relation, Explained