When aired in reruns, the first half of "Conundrum" features the standard "Dallas" closing music over its credits instead of the extended closing theme that was written specifically for the finale.
"Last time on Dallas", the introduction shows every season finalé.
Guest star Conor Duffy, who plays Bobby's son, Little J.R., in this episode is the real-life son of series regular Patrick Duffy, while guest star David Katzman, who plays Bobby's other son, Bobby Jr., is the real-life grandson of Executive Producer Leonard Katzman.
Leslie Bevis, who guest stars in this episode as Jeanne Lawrence, Gary's opposing attorney and lover, appeared in several episodes in the 13th season as Diana Farrington.
Rosalind Allen who guest stars in this episode as Bobby's ex-wife, Annie, in the alternate universe went on to star in the subsequent TV-sequel, Dallas: J.R. Returns, as "Julia Cunningham," a love interest for Bobby (Patrick Duffy).
This is the only episode where the guest stars are shown with a picture in the beginning of the episodes. Guest Stars that are shown are Jack Scalia (Pearce), Joan Van Ark (Valene), Joel Grey (Adam), Linda Gray (Sue Ellen), Mary Crosby (Kristin), Steve Kanaly (Ray), and Ted Shackelford (Gary).
Originally aired as a two-hour episode.
The subplot revolving around Sue Ellen's soap opera character, an older newswoman being replaced by a prettier, younger and less experienced colleague was an allusion to the real-life events happening around that time in which Jane Pauley of NBC's Today was replaced by Deborah Norville.
Valene tells Gary that he was recommended to her by her friend Esther MacKenzie. On Knots Landing, Valene and Gary's next door neighbors and best friends are the MacKenzies.