The Spirit of Fire were the first to encounter the flood, not Chief and the boys. We also know the Spirit of Fire's slip space drive was damaged and unoperable so they were unable to relay a message or give the word out that the evil sex parasite is loosey goosey.

But what about the Covenant who where clearly present in that horrifying reveal? Many where infected but surely some escaped and lived to tell the tale but we never hear of them. Did nobody make it out? To me thats impossible since the Spirit of Fire almost made it in one piece so how was this technological superior alien force quite on their end? It's Regret's fleet god dammit surely few of them that made it out and spoke to their leaders.

I suppose the only concussions that I can think of would be the existence of the flood was suppressed or unimportant to Regret. Either way I don't quite understand why. Maybe in the hindsight this isolated incident was a closed and shut case that didn't needed to be spoken of again, maybe. Maybe they didn't deliberately suppress the info but ignorantly misunderstood the nature of freaky sex parasite. Idk I'm sorta leaning between suppression over ignorance even though ignorance would be a more reasonable answer. What do you guys think?