Somehow, Season 2 of HBO’s The Rehearsal is even zanier than the first one . This time, the life-size practice sessions that Nathan Fielder stages for everyday people to prepare for major life events (confronting a partner, raising a kid, making a TV series about social experiments) scale far beyond Hollywood studio lots and New York bars, delving into the all-too-timely issue of air safety and the uncomfortable interpersonal dynamics that go into co-piloting a successful flight. And in Episode 5, which aired on Sunday, Fielder even dives into his own psyche, exhibiting a probing self-examination on camera that’s unlike any of the other introspective moments we’ve seen so far from the ambitious comedian.

The episode, “Washington,” concerns Fielder’s ongoing attempt to persuade Congr

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