Abby says she's had to give Dan the Heimlich maneuver twice. In the original series, Bull gave Dan the Heimlich maneuver in the season 1 episode Quadrangle of Love (1984), when he choked on an olive.
At the time of this episode's original airing in January 2024, John Larroquette (Dan Fielding) and Marsha Warfield(Roz) were the last two surviving members of the original series most well-known cast (Richard Moll (Bull) having passed away only a couple of months earlier, between seasons). However, Karen Austin, who played Lana Wagner in the original series first season, and Ellen Foley, who played Billie Young in the second season - characters who were replaced by Markie Post's Christine Sullivan - were also still alive.