Bungie, current developer of Destiny, created Halo way back when. They already had plans for Destiny before splitting off from Microsoft and leaving Halo behind, so easter eggs connecting the two universes already exist in the latter. Now, a leak suggests that such a crossover is actually going to happen, for real.
Bungie is turning 30 this year, and while it is best known for sci-fi shooters involving folks in power armor beating the crap out of various alien species, alongside Halo and Destiny the company as worked on games in the Marathon and Myth franchises. Nonetheless, the sci-fi shooters are what they're best known for, and their impact on the industry cannot be understated - whatever you might think of the games themselves.
Bungie hasn't overdone the whole anniversary celebration angle so far, and we're already beyond the year's half-way mark. According to a new leak, this is because the company has some special plans in store for the fall, which may include a sort of reunion consisting of a crossover between Destiny 2 and Halo Infinite.