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> So I started replaying the Halo 5 campaign and ran across something I forgot about; it was a room with about 5 or 6 grunts in it blocked by destroy-able shields. There was a stage thing with a hologram of the Guardian on it and a grunt standing in front of it, with 4 or 5 more grunts below him. It looked like they were chanting, then the top grunt started saying,“Steady, steady!” which sparked the odd idea that they were doing yoga. Does anyone know what they were really doing? At this point, my best guess is that it was a religious ritual.
This is just one of a series of clues as part of the hidden Halo 5 story lines and Lore. Let’s start at the beginning of this little story, then we’ll find a “gateway” to other clues via the Grunt’s Chanting Ritual!
PUTTING THE GUARDIAN TO SLEEP.
(1) In the Temple in Enemy Lines (clip here), if you look carefully at the walls either side of the door to get to the Kraken Fight, we see the “burial ceremony” in the images on the walls in the alcoves. But it’s actually the Burial of the Guardian in the Sea of Sunaion 100,000 years ago, when the Gateway on Genesis was shut down - see the Gateway with it’s rings UP and then DOWN and the Guardians by the Sea of Sunaion, and so the Guardian “goes to sleep”. But in the Reclamation, the Guardian will rise and then the Rings move from down to UP (opposite images in opposite alcoves).
(2) Now where to find the relevant Intels on Sunaion (video below).
(3) Now we can see what they’re doing in The Chanting Ritual in the Chamber (clip here). The Grunts’ chanting is soft like “singing the Guardian a Lullaby”, as they worship, chant and “pray that the Guardian stays asleep”, so preventing the Domain being opened as part of the Reclamation or Sunaion being destroyed…
(4) But wait! If it’s true that “the Domain cannot be opened as long as [the Sunaion Guardian] remains sleeping”, and if the undated Blue Team mission occurs before the dated Battle Of Sunaion, then the “Evil Cortana” LIED to Chief and us in that vision when she said “The Domain is [already] open!” (clip here).
So, this can lead us into a different view of the whole Halo 5 story when we realise we cannot trust this “Evil Cortana” because she’s just trying to trick us into providing our “human touch” on some consoles to “open the Domain” and activate other stuff for her! And Knowing she’ll probably lie about other stuff too, then “amid the lies” we can start to “Hunt The Truth” in Halo 5 - is that really Cortana, and is she being controlled by a hidden enemy, and if she’s NOT Cortana but an imposter, then what is she really up to, and which hidden enemy does she work for? 
There are other clues linked to all this that relate to awakening the Guardian, the “Hunt The Chief” story and game, and finally clues which link Halo 5 to Zeta Halo and so into Halo Infinite!
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> > > Wait is that actually a thing in the Halo Universe?
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> > Um yes? They worship forerunner tech and the guardians look like giant space owls. They also worship the food nipple, but that’s a discussion for another time.
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> Oh yeah, that’s right. The grunts do seem easily manipulated, they seem to worship just about anything that keeps those methane-breathing turtles alive.
Yes, after this Kit Pitlimp Intel on Sunaion, he actually did make it to Genesis, but then comes his last Intel “If you are a god, I worship you! Otherwise… Worship ME!!!”, LOL!
Hope this helps. 