The potential for cooperation between the Heresy Tribunal and the Witch Assembly...
Heinz mulled over it in his mind, feeling that the possibility was exceedingly low.
He was very familiar with the tendencies of the Heresy Tribunal. While police might collaborate with criminals under certain conditions, and even secret police like them might be willing to directly employ a criminal organization to get things done, because of The Covenant's involvement with the special status of multiple countries, it was almost impossible for any country's heresy tribunal—except perhaps for Neidlan—to let go of their dignity in this way, for fear of giving other nations something to talk about. And this was even more true for the autonomous state's heresy tribunal.
Mutual exploitation was plausible, but was that really enough to take care of the Harvest Mother Cult?