The earliest mention of the game "Kadis-kot" in the Star Trek chronology. It first appeared as a game enjoyed by Seven Of Nine, Naomi Wildman and Neelix in Star Trek: Voyager (1995).
Daedalus, father of Icarus, built the labyrinth for King Minos to contain the minotaur.
At one point in the episode, a signal code is heard starting with "Pi". Coincidentally, this episode was broadcast on "International Pi Day", which celebrates the famous endless number which starts with 3.14, which signifies in the traditional calendars: March 14. Episode was first broadcast March 14, 2019.