Sorry if it's a dumb question, but I bought the Gold Edition and I cannot see whether that already has the DLC included in its installation or I have to download it separately. I found no way of knowing within the game's menus and Galaxy doesn't show them in the Extras section. Only in the "offline versions" list of stuff, but I assume that is its own thing.

This is probably a somewhat more general question, not just with this game, but Galaxy installations overall, too.

In the main menu you'll see banners with 1 and 2 (in roman numerals). In the upper right corners when the DLCs are installed.

Hey, thanks! Yes, I got those banners.