So Bakker straight up said Kellhus' goal was to stop the Resumption of the No-God and save the world.
"Think of the gradual possession suffered by Sorweel whilst wearing the Amiolas. Kellhus knew something was up, but the 10-sided die was cast. The great weakness of the Dunyain is the weakness discovered by Moenghus. For all the power of their intellect, their spirit is actually quite weak."
This quote indicates to me that Kellhus DIDN'T want Ajokli there, or couldn't stop him, so he maybe had to make other plans. It also indicates(again, to me at least) that much of what Kellhus said, maybe since the very beginning of the Golden Room scenes, was all Ajokli, and not Kellhus.
Oh, and a side-note, would Ajokli looking into the Inverse fire just see, like a closed circuit TV broadcast of his living room? Makes a bit more sense, then, his answer about what he observed.
Preach

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Yeah and I was also thinking about the length of time that Ajokli had been potentially possessing Kellhus. I think we can assume that Ajokli was speaking to him while on the circumfix. But if Ajokli was in control why would this moments of humanity displayed by Kellhus in the last book even happen? Why would Ajokli bother pretending to care about these people? I'm so lost haha
As Dunkelheit says above, Kellhus pretty clearly tells certain principals that the Darkness owns him the closer he gets to Golgotterath. It seems to be a gradient of agency as Kellhus nears the World's deepest Topoi.
Regarding the RAFO's, they are evocative, however, I bear in mind that RSB has apparently not planned out TNG as he had PON & TAE. So there is an ambiguous tension here.

Classic Bakker. He's inadvertently coy, which is probably a developed habit over years of interacting with fans.
He most definitely has TNG's narrative mapped, though he's still making choices regarding presentation and style, which could drastically change how we read it.
He's also maintained for years - though it would send me really digging for an online citation (which I'll try to come back and add because it will haunt me otherwise) - that the last last scene and last last line have been written in draft for a long time.
After Scott's AMA (where he states quite clearly that Kellhus is dead, to stop Resumption was his goal and that TTT has run its course) I realize that I probably overestimated Kellhus. Up until now I thought all of this must be part if some convoluted Masterplan, that Kellhus who has conquered the Three Seasons and always seems to know what's going on couldn't fail so spectacularly.
What I forgot is that Kellhus has not reached the Absolute and is not a self-moving soul. He has extraordinary abilities but he is still not free from the darkness that comes before. And as he himself admits, the closer he comes to Golgotterath, the greater the darkness.
I believe in TGO there's a line from one of the infrequent Kellhus POVs that despite his accomplishments he's
still just one intellect and two hands.
But yeah... this seems to be one of the primary frustrations pervading the online fandom right now so you're definitely not alone

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In my opinion much of what Kellhus says makes little sense coming from Ajokli. I think the possession is not and either-or thing, more like a sliding scale. As time goes on he slides from Kellhus to Ajokli, until he is full on Ajokli with his head on fire.
+1
He seems to have made it quite clear (for RSB that is) that Ajokli has been subverting Kellhus gradually for some time. Possibly as far back as the Circumfix.
I think i'm going to start the slowest reread ever.
If the Vision is Ajokli, It's been whispering into Kellhus' ear for long enough for Kellhus to tell Proyas in TGO that he no longer trusts his own thoughts entirely, that he made a mistake when he listened to the Vision when it told him to kill Moenghus.
Also, to the bold, that might smartest thought I've read yet since TUC's release. We'll be reading a whole new series cued as we are by TUC's Layers of Revelation.
Oh, also, also, I updated the thread title. I really don't think that readers have done justice mining the
Unholy Consultation thread here yet.