Re: First Contact alternate timeline
You can watch TNG "Q Who" and "BOBW" without ever watching ENT "Regeneration" and you would know that the reason the Borg invaded Federation space was because of their initial encounter with the ENT-D . How they damaged a cube, and miraculously (thanks to Q) escaped a pursuing cube.
The cube in "Q Who" was already headed in the direction of the Alpha Quadrant (thanks to the message from Regeneration) when the Ent-D encountered it.
"Pitching is simple -- cheese for the kitchen and a yakker for the kudo." - Dennis Eckersley