it down. Upon Dax and Kahn's first meeting, Major Kira Nerys (Nana Visitor) notices that they are very familiar with each other; Dax tells her that Kahn used to be her wife. Dr. Julian Bashir (Alexander Siddig) later explains to Kira that previous hosts of the Dax and Kahn symbionts were married to each other, but Trill are forbidden from reassociating with partners and lovers of past hosts. At the welcome party for the visiting scientists, Dax and Kahn warm to one another's company once more. Afterward, they begin to socialize as they work together on Kahn's wormhole experiment aboard USS Defiant. They agree to have dinner, but to also bring Bashir along as a chaperone. At dinner, Bashir is effectively ignored by the two Trills as they reminisce about their past hosts. Later, back on the Defiant, Kahn successfully creates an artificial wormhole and Dax hugs her in celebration. Kahn's brother Bejal (Tim Ryan), who is on the science team, speaks to her separately and highlights his concerns regarding her contact with Dax. Despite this, Kahn goes to Dax's quarters and a discussion between the two leads to a kiss; Kahn leaves before it goes any further. Dax confides in Sisko that she knows she is in love with her former wife. He reminds her that Trill customs mean that if they resumed their relationship, then they would be exiled from their homeworld and their symbionts would never be joined with a new host, but says that she will have his support either way. Kahn and Dax continue to work on the experiment, but it goes wrong and Defiant is severely damaged. Kahn is injured in the explosion, but Dax rigs a force field across a plasma fire that allows her to reach Kahn, coming to the realization that the relationship is worth exile. After returning to the station, Kahn recuperates from her injuries. She decides against resuming her relationship with Dax, and—with the experiments complete—departs with the science team, leaving Dax heartbroken. Production Writing and directing "Rejoined" marked the first time that longtime Star Trek writers Ronald D. Moore and René Echevarria wrote a script together. They had been hired by executive producer Michael Piller following separate unsolicited manuscripts submitted during the third season of Star Trek: The Next Generation, and had remained on the staff of the franchise since. In Echevarria's first draft of the story, there