Jimmy Fallon joked and laughed his way through a Tonight Show interview with Fox News late-night rival Greg Gutfeld, who recently tried to reclaim the word “Nazi” as his own.

Greg Gutfeld made his broadcast late-night debut on “The Tonight Show Starring Jimmy Fallon” Thursday evening, marking a rare network crossover with the Fox News host visiting NBC’s 30 Rock. A conservative media personality is a rare booking for “The Tonight Show” and the 10-minute segment between Gutfeld and Fallon largely steered clear of politics.

Greg Gutfeld, host of Fox News’s late-night show Gutfeld!, will appear as a guest on The Tonight Show Starring Jimmy Fallon Thursday, a crossover he expects will be “fun.” Gutfeld! is growing in attention in the late-night television genre,