Much like how Disney and Sony made a pact to bring Spider-Man into the Marvel Cinematic Universe, some fans have been hoping for something similar regarding 20th Century Fox’s X-Men and the Fantastic Four. The future of the cinematic mutants are a bit murky at the moment, and it’s even worse for Marvel’s first family. Unfortunately, Marvel Studios head Kevin Feige put the breaks on this chatter during a recent interview.

Speaking with Variety about the crossover potential, he said:

“It’s an impossibility at this juncture. We certainly have enough films to keep us busy for a number of lifetimes.”

So that seems like we can cross another prediction of our list for those untitled post-Infinity War Marvel movies.

That means Fox has their work cut out for them, at least for now. According to various reports, the hope is to make another X-Men installment focused on Jennifer Lawrence, James McAvoy, and Michael Fassbender, but all three have been cryptic about the status of their return and their contracts expired with X-Men: Apocalypse, meaning renegotiations would have to occur. Lawrence had even said that if one of them doesn’t want to return, they all won’t. Furthermore, Deadpool 2 hit a snag when director Tim Miller bowed out over creative differences, and the solo Gambit movie with Channing Tatum was put on hold. However, there still is the New Mutants adaptation in the pipeline, which has Fault in Our Stars helmer Josh Boone writing and directing.

With Fantastic Four, the drama over the 2015 reboot was so intense that writer-director Josh Trank is still feeling the burn. Some of the cast members said they’re up to return for a sequel, but the slotted release date for Fantastic Four 2 was dropped. As per the original deal that gave Fox the property, the studio can’t wait around, either, or else the rights will revert back to Marvel.

Fox and Marvel are breaking the ice the TV sphere, because Jeph Loeb, who heads Marvel’s television division, is producing FX’s Legion as a co-production between Marvel TV and Fox’s Simon Kinberg, Lauren Shuler Donner, and Bryan Singer. They were also developing a Hellfire Club series with Marvel but plans for that show were eventually scuttled.