Quote Originally Posted by Veloran View Post
Of course, it's also possible Fandaniel is simply making his entire personality up just to get Zenos to play along, not that he seems all that enthused about it.
This is crux of their relationship. Fandaniel is setting up a betrayal and Zenos either knows and doesn't care or believes he will gain the upper hand if it the betrayal happens. Either way, Zenos will get what he wants which is a WOL confrontation.

I believe Zenos has the upper hand, as Shadowbringers didn't show the fight where he expelled Elidibus from his old body. It seemed strange at the time to keep this villain alive and not show his growing power when he takes back his body, but if it will affect a future plot point then it's the only reason that makes sense to exclude it.