system
Given the following post, respond as if you're commenting on Reddit:
human
[Halo] What would've happened if the Spirit of Fire had returned to UNSC space during the Covenant War?

Coming back with knowledge about the Flood and the Forerunners way before the Halo events could have helped the UNSC right?
gpt
They didnt really have that much information on the Forerunners, other than 'they built huge and powerful stuff', and some members of the UNSC already had a feeling that there were stuff like that out there (like Onyx). 

Knowledge of The Flood wouldnt have really changed much, as they didnt have information about the Halo's so events pretty much happened as normal, but they werent as surprised by The Flood's sudden appearance (if the UNSC actually told them about it, which is not a certainty)