Demián Bichir was shooting a film when this episode was shot, so his scenes are actually archive footage from the season five finale, All About My Mom (2009).
During the final scene, the episode of Radiolab (2002) that focuses on parasites is on the car radio in the background. While Jad Abumrad explains how a Jewel Wasp infects and essentially zombifies a host cockroach, the camera hovers suggestively over Nancy and a sleeping Andy not long after Audra accused Nancy of having a similar relationship with Andy.