Carisi asks Benson to say to him something she said last year, which was "Make it Hurt" as part of the punishment she wants to get on Roy Eastman. She said that to him about the deal he should give Rory O'Toole in the season 21 episode I Deserve Some Loving Too (2020).
Coincidentally, that episode also had Hasim Khaldun, in his first appearance.
Hasim Khaldun mentions the viral arrest of the wrong suspect, Jayvon Brown, from the episode Guardians and Gladiators (2020).