After Martok stabs the two guards, there is no blood on his daggers.
When Sisko and Dax return in the damaged Rio Grande, it is the same footage as used in the episode "Body Parts".
During the mission briefing, Chief O'Brien said that "dead changelings do revert to their gelatinous state." As seen in The Adversary (1995), dead changelings crumble to dust when they die. O'Brien was in the room when it happened.
In this episode one of the Klingons brags about killing Captain Laporin, a Benzite who Captain Sisko says he went through Starfleet Academy with. However in the Star Trek The Next Generation 1 season episode Coming of Age, it was said that Wesley Crusher's friend Mordoc was to be the first Benzite in Starfleet.