Yes. Actually, 343i explained this in their video on Waypoint that covers what happened between Halo 2 and 3. [url=https://www.halowaypoint.com/en-us/universe/detail/f99d83df-50e2-4b77-8cc2-96df1a107956/the-long-road-home]Here's the video.[/url] Basically, Truth actually hung around in Sol before heading to Earth because he was concerned about the Master Chief aboard the ship. He didn't want to take it to the portal generator with the Chief still a threat.