At that point, it becomes quite easy to distinguish who is truly loyal, who is rebellious, who is the middle ground that can be won over, and who is the vacillator that must be suppressed to establish authority...
Using these methods, Alchaton has already purged several Calamity Fleets, taking out troublemakers and removing dissenters who originally harbored ill intentions, swapping them for a few utterly loyal fleets that follow his orders completely. In a swift manner, he showcases his prowess as the Chaos Warlord and the supreme leader of the Chaos Army.
However, these methods have never been used against Zachariah.
The Chaos Warlord knows that this 'White Wolf' is not one of his own, harboring second thoughts and deep-seated ambitions. Yet, the Calamity Fleet led by Zachariah has always been notably 'obedient.'
