When you purchase a DLC from Xbox, you are buying a license from Microsoft to access the DLC on their Xbox platform only. The same goes for when you buy a game or DLC from Steam. The license isn't from Bungie and they don't control what DLCs you have access to or where. Xbox, Steam, Playstation, and Stadia dictate to players and developers the terms of their game and DLC licensing. They have no agreement to share licensing together either. If you want to buy a DLC on multiple platforms, you must buy it from each platform you want to have access on. [spoiler]Steam is not willing to give players a DLC because you bought it from a competitor, because they didn't get any of that money. If you want that to change, you'd need to petition those companies to come up with an agreement.[/spoiler] Season passes are not the same as DLCs. DLCs are downloaded content that is licenses to an account. Season passes are in-game digital add-ons similar to other items you buy from Eververse, which makes them applied to your game character data, not your Xbox or Steam account. When you use Cross Save, you are accessing [u]one[/u] set of character data on other platforms. If you buy a season pass with a cross-saved Xbox character on Steam, then deactivate Cross Save, the pass goes with that character back to Xbox. It does not get shared to both your Xbox and Steam characters.