Here is a conversation of 343GS:
[edit]343 Guilty Spark's Log
>>> 343 GUILTY SPARK - EXTRACTED/TRANSMITTED/VOLUNTEERED FROM LOG >>>
Revolution 56-11.333: Ho hum. Eons of inactivity and perfect stability. Then everything happens all at once.
A primitive, hegemonizing swarm calling itself The Covenant has landed on installation 4. Apparently seeking something specific. Exploring! Meddling! I've seen it all before. They'll record what they see and they'll leave.
Detail species NA Covenant/collective religious
sect/tech level 4 spacefaring/tech familiar
Revolution 56-11.334: Oh dear. Containment protocols appear to have been violated.
The interlopers appear to have accidentally released the Flood infection forms. This situation is rapidly deteriorating. Most of these interlopers appear to contain ample calcium stores. And they've brought plentiful means for the Flood to escape containment and spread. How impossibly thoughtless. I suppose I'll have to activate the facility.
Revolution 56-11.335: Thank goodness. A Reclaimer is here. And what perfect timing. I am sure he will assist me cleaning up this irritating mess.
Revolution 56-11.336: The Reclaimer has proven to be less than helpful. Obstinate, in fact. And of course, there is no precedent for this situation. Ho-hum. As usual I shall have to rely on my own better judgement. Perhaps the Reclaimer simply requires persuasion.
Detail visitor Reclaimer/AI companion/Obtuse
purpose/mission
Revolution 56-11.337: Well, my judgement seems to have failed me for once. The Reclaimer has initiated a reaction in the engine system of a very dirty spacecraft. Data suggests it will destroy installation 4 utterly. I believe discretion might be the better part of valor. I have attempted to fulfill my responsibilities to the best of my ability.
Revolution eta-condition: Well, everything is in a terrible state. The installation is ruined. I am stuck here in the middle of nowhere with only impulse propulsion, and the only good news is that the Flood breach has been halted, albeit inelegantly.
Detail Installation 4 destroyed/nuclear
reaction/Flood containment achieved by Reclaimer
Revolution eta-condition: Excellent! I believe I see assistance approaching...<ends>
You may want to pay attention to this part: ''I've seen it all before. They'll record what they see and they'll leave.''
From this part we can tell that other civilization have visited halo, but as we all know there haven't been other sentient species sighted. Where did the previous one go? I'm pretty sure that species able to travel though void of space would not go extinct so easy.
Before you say that 343GS destroyed them(im pretty sure that no one will be that stupid to say thing like that, but just in case)i have 2 argument about him doing that.
1.Why the hell would he destroy a reseeded race(even if he could surpass the protocols and gather enough sentinels to destroy a whole civilization).
2.If he said that ''they'' recorded and left, how could he have known that ''they'' left if he would have destroyed them.
Thank you for your attention, it is 2 at night and i apologize for any mistakes both in grammar and speculating i have made.
Feel free to correct me.