After much anticipation, the unlikely meeting of the two worlds unfolded on Wednesday's installment of "Abbott Elementary."

The two sitcoms could hardly be more tonally different, but this week’s crossover episode of “Abbott” was relatively seamless.

Producers Justin Halpern and Patrick Schumacker break down the epic 'Abbott Elementary' and 'It's Always Sunny in Philadelphia' crossover episode

A crossover television event is always a thrilling prospect—not one, but two of your favorite shows coming together as one? There have been plenty of surprising combinations throughout the years: The Jetsons met The Flinstones,

A live TV streaming service that includes ABC in its channel lineup will do the trick. Hulu Plus Live TV and YouTube TV are among the options -- both start at $83 per month -- and you can stream the Abbott Elementary episode with Sling Blue if you're in a select city.

Philly pride runs strong, even for celebrities. The Welcome to Wrexham creator and Bradley Cooper are not the only famous guest stars to pay tribute to their roots in an episode of Abbott. Eagles football players Jalen Hurts and Jason Kelce also made cameos in Season 3, as Abbott ’s always one to cater to their PA fanbase.

Charlie learns to read, Dee impersonates Ben Franklin, and Frank fights raccoons. We don't quite know what's up with Dennis though.

"Abbott Elementary" star Janelle James is schooling us on that "It's Always Sunny" crossover and unwinding with the help of "rich people" wellness.

The highly anticipated crossover episode of “Abbott Elementary” and “It’s Always Sunny in Philadelphia” blends the raunchy, NSFW style of the FX show with the witty, family-friendly romp.

This week's "Abbott Elementary" episode is just half of the story. "Volunteers" featured the long-awaited crossover with FX's long-running "It's Always Sunny in Philadelphia," as told from the vantage point of the hit ABC sitcom.