Diaz asking if they could just give Cheddar a bone and Holt yelling "Bone!" is a call back to an earlier episode, when Holt and Kevin were fighting and she says that to change that they need to bone, which makes Holt yell "Bone!" repeatedly.
Jake's "Patrick Ewing Top Shot" is a digital collectible. Jake has purchased a 'moment' that took place within an NBA game.
In the previous episode, the movie Knives Out (2019) is mentioned several times. In this episode, K Callan plays Carol, the mother of Frank O'Sullivan. She also happened to play Harlan Thrombey's mother in "Knives Out".
Although O'Sullivan is revealed to have been re-elected for life as head of the uniformed officer's union, he is not seen again.