Carisi mentions Federal law enforcement taking away one of his cases before. This happened in season twenty-one's Counselor, It's Chinatown (2019).
Stabler asks Benson how she is doing after her car accident, which happened two episodes earlier.
Benson says her therapist asked if Stabler going off the grid again was triggering for her, referring to how he left without warning during the episode Scorched Earth (2011).