Since Marvel’s Agents Of S.H.I.E.L.D. first aired in 2013, it has had multiple tie-ins to the greater Marvel Cinematic Universe, such as the collapse of S.H.I.E.L.D. following the events of Captain America: The Winter Soldier. With the collaboration of Marvel TV and Netflix came a collection of highly acclaimed shows, which are also set in the same universe as the movies and S.H.I.E.L.D.; however, neither of those three elements have crossed over with one another yet.
Jeph Loeb, head of Marvel TV, recently teased that we should never disregard the possibility of a crossover, though, despite the fact that S.H.I.E.L.D. airs on ABC rather than Netflix.
“I get in trouble every single time I say this, which is #ItsAllConnected. But trust me when I say #ItsAllConnected and that’s about all I can say on it at this time.”
“One of the things that’s a challenge and it’s unlike the movie studio because the movie studio is making all of the movies for one place and that’s the theaters. The theater owners don’t get to say well we don’t want Spider-Man to be in Captain America — in that particular case Sony and Marvel had to work that out so that could happen. But in the case of what we do, we have networks to consider and that’s a conversation [for] ABC and Netflix — and now we have shows at Hulu and Freeform and FX [as well]. So it just becomes a question of once it starts, what have we unleashed? But it’s certainly a topic of conversation.”
Personally, I don’t think a crossover would work very well. I would prefer for the Defenders shows to stay on Netflix, as they are praised for their gritty, down-to-earth themes, which would conflict with what S.H.I.E.L.D. is generally known for.