Garak was first revealed to suffer from claustrophobia in the fifth season episode By Inferno's Light (1997).
In Rejoined (1995), it is stated by the Trill Symbiosis Commission that a symbiont in a new host is supposed to "learn to let go of the past, let go of parents, siblings, children, even spouses." Dax, however, being contrary as usual, as Ezri, pretty much picks up Jadzia's professional life where it left off, living and working on the same space station as Jadzia did and working alongside Jadzia's husband.
This is the last episode of the series to be directed by Les Landau, who moves on to Star Trek: Voyager (1995).
This takes place in 2375.