Barnabus:
It's more like a colossal mystery.
So the crypt knight's a servant of V. and the sentinel's a servant of N. and for some reason animus exists between them?
More like a disagreement on the direction of foreign policy.
Labyrinth Lord:
“Although the priests of Nergal seek the same end as Lord Varghoulis, he knows that they are foolish. Naïve. They believe that doors they force open will assure them victory. They underestimate the enemy.”
They wouldn’t attack each other on sight or anything. Varghoulis might chide the forces of the priesthood, insisting that they do more to wipe out the living in the Duchy, but that would probably be the extent of it.
Barnabus:
Did B. get a read on its turning level/HD when he encountered it earlier?
Yes. It would be considered
infernal for purposes of turning.
But, it isn’t the sentinel which is approaching. The crypt knight didn’t betray the sentinel with the information it provided.