Every Saturday, Lorne Michaels picks an older episode of SNL and it is run alongside the live broadcast. In the event of something catastrophic that would stop

Every Saturday, Lorne Michaels picks an older episode of SNL and it is run alongside the live broadcast. In the event of something catastrophic that would stop the show, like a performer dying, the feed will switch from the live broadcast to the older episode. Only tangentially related, but morbidly fascinating.