"What if the Enterprise-D failed to stop the Borg in BOBW?" And do you think the Vulcans would have abandoned Vulcan under the pretext of: "Earth and Starfleet Headquarters have been assimilated. Including several Vulcans. There is no plan we can come up with that the Borg cannot anticipate. Logically their next target will be Vulcan. The logical course of action is to deny the Borg any more drones and to abandon Vulcan."
DC Comics' TNG vol.2 http://nostalgic-g.blogspot.com/2008/11/star-trek-worst-of-both-worlds.html Issues 47-50.
Actually it spins off of Generations. EDIT: I guess it could be considered a spinoff of both films. Since both are important to the story.
Isn't it... Spoiler: Engines of Destiny Because a post-"Relics" Scotty saved Kirk from dying on the Enterprise-B, Picard never met Kirk in the Nexus, Generations went badly and so the Borg were never stopped from rewriting history in First Contact? At least, that was my interpretation. I don't think it's ever explained properly, because neither the post-"Relics" Scotty nor the Kirk he rescued nor anyone in the pre-Generations present of the book would have any idea.
The event the book is built around is Kirk dying on the Enterprise-B is from "Generations". So I always counted the book as being spun-off from there.
Spoiler: engines of destiny Actually the Borg Queen has a few appearances in the book one of which has her explain that the alternate 23rd century is the result of Picard not being there to stop them from going back in time and altering history in First Contact so at least on character did know what effects changing Generations had.
Spoiler: Engines Which is built on a monumental flaw - the Borg going back in time only happened because Picard was there and helped destroy the cube. That whole part didn't make any sense, and since it was an important aspect of the plot, it completely lost me.
After all Spoiler: engines we know the Enterprise wasn't at the battle because of Picard. Without him, why send away the most experience crew you have at fighting the Borg. They might have done a lot better with them there from the start.
We don't know that for sure. In fact, I don't think that interpretation holds water at all. Spoiler: First Contact If the Borg had something as powerful as time-travel technology, why would they save it for an emergency backup plan only? It seems more likely that the whole reason they came to Earth was in order to use the time machine -- that the fleet almost managed to stop them but they were able to proceed with their intended plan at the last moment.