Guy Gardener wrote:
The thing to remember is that the DS9 sets were pulped, stolen and sold the day after production wrapped on the final episode.
They had a window and it closed, even if it was open when Message in a Bottle aired.
Message in a Bottle aired during season 6 of Deep Space Nine. They had another season and a half to do a crossover, if they wanted to.
I maintain that they didn't want to, and it wasn't needed.
Without ruining it for the OP, there were 4 cameos by TNG cast members in Voy.
Riker in "Deathwish" was the first. So being out of production did mean anything.
I read your spoiler, but I was mainly speculating that an appearance by the Enterprise-E would have made more sense than an appearance by DS9 or any of it's crew.