Forget seeing Luke Cage and Daisy Johnson in the Marvel Cinematic Universe. According to Jeph Loeb, it’s simply too hard to plan.

Although the Marvel movies and TV series ostensibly exist in the same universe, and although Agents of S.H.I.E.L.D. does its best to include Avengers references whenever possible, TV show characters are unlikely to ever show up in the movies.

This despite Chloe Bennet’s continued efforts to remind people that she is, in fact, Marvel’s first on-screen female Asian superhero, and the awesome crossover possibilities the Marvel Netflix series have opened up.

Marvel fans have long been aware of the difficulties of bringing TV characters into the movie ‘verse, but at the 2016 TCAs, Jeph Loeb provided a few more reasons for why it’s practically impossible to coordinate.

“Part of the challenge of doing this sort of thing is that the movies are planned out years in advance of what it is that we are doing,” Loeb says, as quoted by SlashFilm. “Television moves at an incredible speed. The other part of the problem is that when you stop and think about it, if I’m shooting a television series and that’s going to go on over a six-month or eight-month period, how am I going to get Mike [Colter] to be able to go be in a movie? I need Mike to be in a television show.”

In terms of planning out the character arcs, this makes a lot of sense. A Marvel movie might be mapped out years in advance of production, for not to mention release, which means any character scheduled to appear would need to have their stories planned for many seasons in advance. The continuity would certainly be hard to keep track of.

Of course they could still throw in cameos, which fans would probably really appreciate — and crossovers from movies-TV are much more doable, as evidenced by Maria Hill (Cobie Smulders), Nick Fury (Samuel L. Jackson) and Lady Sif (Jaimie Alexander)’s multiple appearances on AoS.

But Marvel is wary of doing that too much, too, because “we never want to be known as an Easter egg farm. It has to work within the story. We never want to do Luke Cage gets into a cab as Foggy Nelson and Matt Murdock are getting out of the cab,” Loeb says, referencing The Man From U.N.C.L.E..

However, don’t lose hope yet. “Anything is possible,” says Loeb. “As I often get reported by you folks for saying #ItsAllConnected, our feeling is that the connection isn’t just whether or not somebody is walking into a movie or walking out of a television show. It’s connected in the way that the shows come from the same place, that they are real, that they are grounded.”

Would you like to see Marvel TV and movie characters cross over more?