Star Trek: Voyager and Deep Space Nine characters occasionally crossed over, such as Lt. Tuvok and Dr. Lewis Zimmerman. Commander Chakotay's Maquis background connects both series, but he isn't in DS9. Admiral Chekote and Commander Chakotay share similar names, but it's not a relation; it's a coincidence or possibly an in-universe explanation.

Is Star Trek: Voyager's Commander Chakotay (Robert Beltran) in Star Trek: Deep Space Nine? It's not outside the realm of possibility, because Star Trek: Voyager and Star Trek: Deep Space Nine overlapped for six years in the Star Trek timeline. Star Trek: Voyager's Delta Quadrant setting should prevent Voyager characters from appearing in Deep Space Nine and vice versa, but Star Trek: Voyager and Star Trek: DS9 crossovers did happen, like Lt. Tuvok (Tim Russ) from the Mirror Universe in DS9 season 3, episode 19, "Through the Looking Glass", and Voyager's Robert Picardo as Emh engineer Dr. Lewis...