In case you are wondering, the Koala says "It's not your time, Bradward Boimler" in reverse.

Is Jerry allowed to do this while on strike?

E: Watching the trailer, they definitely pre-recorded the segments because no way Eugene and Tawny would do this.

Just amazed at how far ahead they planned for the strike, but maybe that's the result of how poorly it went the last time it happened.