Considering how often Marvel film and television executives are asked about Netflix heroes Daredevil, Jessica Jones, Luke Cage and Iron Fist appearing on the big screen, they likely wish they'd selected a mantra other than "It's All Connected."

While characters like Phil Coulson, Nick Fury, Maria Hill and Lady Sif have appeared on "Agents of S.H.I.E.L.D.," and both the ABC and Netflix dramas have referenced, and even directly addressed, events from the films, it's clear fans desperately want to see the TV heroes interact with Earth's Mightiest Heroes. "Avengers: Infinity War" co-director Anthony Russo explained last year that such a crossover would be "complicated," owing to corporate divisions and character rights, while Marvel Head of Television Jeph Loeb more recently chalked up the difficulty to logistics.

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Nevertheless, the question was posed again to Marvel Studios President Kevin Feige, who seemed to throw cold water on the idea, at least for the time being.

"It all depends on timing," he told Collider. "It all depends on how to do it because I don’t think what anybody wants to do is have such important characters show up for one second. Black Panther and Spider-Man to me are the high bar in 'Civil War' of how you can bring in new characters into something. Vision and Ultron, Wanda and Pietro in 'Ultron.' And it takes a lot of screentime, and it takes a lot of work. 'Infinity War' has a lot of people in it already. So it just depends on how we could figure it out."

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And he means a lot of people. Directors Joe and Anthony Russo revealed early this year that, between "Infinity War" and the now-untitled "Avengers 4," there will be somewhere around 67 characters. Co-writer Christopher Markus later clarified that number merely represents how many characters -- both major and minor -- that had been introduced to date in Marvel films. But even if that figure is reduced dramatically, it's still means a sizable number of characters, from the Avengers and the Guardians of the Galaxy to Doctor Strange and (probably) Spider-Man.

Even if the stars, and schedules, aligned, figuring out how and where to use the Netflix heroes in anything more significant than a cameo or montage would be a major undertaking.

"Avengers: Infinity War" opens May 4, 2018.