Dr Mutran's board-to-board with UnFriggenForgeable
From Halopedia, the Halo wiki
Halo: Online and my evidence[edit]
I do have evidence of Halo: Online being lore.
On this link, check out the fourth question. ANVIL Station is in fact mentioned with dates ranging back to 2553
https://www.halowaypoint.com/en-us/news/canon-fodder-have-s-moa
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In this link, you can see the MIRMILLION Class armor being mentioned, which was exclusive to the participants on ANVIL. (It is under the first two lines where you see the first bold sentence.)
https://www.halowaypoint.com/en-us/news/canon-fodder-armory-amore
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This link is pretty self forward.
https://www.halowaypoint.com/en-us/news/halo-online-closed-beta-launching-in-russia
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I will also be asking Grimm Brother One about this case, with other reachable story writers within the company. It's not against you in any way. I am only out to prove legitimacy within the game. For everyone. There is so much lore behind Halo: Online, I don't see how we could forget about this.