Sure you can. VOY invented the concept of the Borg being in Delta. Before "Scorpion", we had no reason to think that this would be the case. Quite to the contrary, in "Descent" the renegade Borg fled to Delta, suggesting this would have been a sanctuary far away from the Collective
Didn’t First Contact outright state that the Borg would still have been in the Delta Quadrant in the 21st century?