- last post: 01.01.0001 12:00 AM PDT
No. It means the Great Journey begins at Earth. None of the humans would be left behind 'on the path to salvation' because Earth is their homeworld. The Elites were meant by the Prophets to be 'left behind'. 'To finish what we started' could either mean the final defeat, or tying up loose ends since the Prophet and Elites were at war.
I think the "Covenant AI" aboard the Forerunner Ship is actually a Forerunner AI that Cortana mistakened. It could be the shipmaster. Since the Covenant base nearly all of their technology from the Forerunner, it is no surprise if AI constructs are similar. Not to mention we don't know whether Truth has reached the ship yet.