Re: DS9/VOY...if it happened differently...
It just shows the effectiveness of Starfleet security that no unauthorized persons from DS9 were able to stowaway aboard Voyager in "Caretaker". And that a Cardassian operative in Bajoran disguise got by them.
Curly: Moe, Larry, the cheese! Moe, Larry, the cheese! (Horses Collars, 1935)