"Dennis is the key" to the Abbott Elementary/Always Sunny crossover, creators say

Crossing over comedies as disparate as Abbott Elementary and It's Always Sunny In Philadelphia wasn't as difficult as you'd think: Disney head honcho Bob Iger was "very into it" when Quinta Brunson pitched him the idea, she says in a new interview with Rolling Stone. Creatively, "I think it got unlocked when we realized we could tell the same story from two different perspectives," Rob McElhenney adds. "So we have the Abbott episode and then the same story, except told through the prism of Sunny...