Just after confronting Apophis and passing through the portal back to the end of time. This is the first exchange with Forgotten Knight and the player’s response option is “Commotion? Where’s Apophis” as if Forgotten Knight said something about a commotion. I’m unsure if this is a typo or if Forgotten Knight previously had different text when first interacting.
https://imgur.com/JpleXEX
Also, speaking with Agony right after speaking to Forgotten Knight doesn’t progress the quest The Monolith of Faith, and the quest indicator isn’t centered on Agony, it’s off to the side covering nothing - not even the walkway. I did step through the Monolith portal just in case it would trigger it, but it did not.
https://imgur.com/f4B9mm4
Edit: Relogging allowed the quest to advance to the next stage