The Legion had actually already missed the golden opportunity to swiftly end the battle while the Cosmic Humans were caught off guard.
Although their vanguard fleet currently had the Mars Sector under control, the ground operations were not yet fully concluded. They had already dispersed their fleets, branching out in every direction to eliminate resistance in the Asteroid Belt, primarily targeting Gully Industries' corporate assets, contesting mining zones and orbital factories.
After all, other cosmic forces, like the Dornian fleet and SDOA, had also started to snatch up corporate assets. Clearly, no one was willing to stick their neck out and launch a full-scale assault on the Earth-Moon Space Domain before the Legion's main fleet arrived.