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

The "Abbott Elementary" and "It's Always Sunny in Philadelphia" crossover ... Rudnesky: This was one of my biggest questions: Can Charlie (Charlie Day) read? Compendio: Infamously, Charlie ...

It’s always busy for the It’s Always Sunny in Philadelphia cast.

Below, Day chats with THR about pulling off the crossover episodes, his initial hesitations about the idea and why he thinks the next season of It's Always Sunny ... funny to do. Charlie Kelly ...

At first glance, a crossover episode between Abbott Elementary and It’s Always Sunny in Philadelphia ... Dennis (Glenn Howerton), Charlie (Charlie Day), Dee (Kaitlin Olson), and Frank (Danny ...

When “Abbott Elementary” creator Quinta Brunson mentioned the idea of a crossover episode with “It’s Always Sunny in Philadelphia” — fueled from a conversation with Rob McElhenney ...

Okay, so let's kick things off with a "who's who" look at our major players tonight: FXX's "It's Always Sunny in Philadelphia": Rob McElhenney (Ronald "Mac" McDonald), Charlie Day (Charlie Kelly ...

And how can you watch Abbott’s It’s Always Sunny crossover episode live and online? We’ve got answers, along with a Charlie Day interview to get you even more pumped for “It’s Always ...

A second part, showing the same weeklong period through the Always Sunny lens, will air as part of that show’s upcoming 17th season. RELATED: Charlie Day Was Eager For The Challenge Of Filming ...