Frequent frenemies and sparring partners Jon Stewart and Bill O'Reilly are set to have their longest debate ever, it was announced Monday.

Stewart's and O'Reilly's appearances on each other's shows have long been eagerly anticipated occasions. Now, the two will face off in a 90-minute debate at George Washington University in Washington, DC on October 6. The debate, modeled after the presidential debates and dubbed "The Rumble In The Air-Conditioned Auditorium," will be livestreamed for a fee , with half of the proceeds going to charity.

New York Post columnist Cindy Adams blurbed the event , and O'Reilly used his Monday show to raz Stewart a bit.

"In order to illuminate the vital issues associated with the upcoming presidential election, Stewart and I will debate man-to-man, eye-to-eye," he said. "Well, not really. He's a tiny guy."

(h/t Brian Stelter )