Byrne analyzed the situation briefly and immediately said to the old priest and the town chief:
"They must be hiding underneath one of the boats, attempting to outlast us in patience. We had better find a way to flush those two out of the water."
Alchemical explosives won't work, not to mention the consequences of destroying all the boats in the harbor.
The more direct reason is that those things won't explode underwater.
After some thought, he said, "I need you all to be honest about your abilities and follow my command to see if we can find a way."
However, each person's expression turned difficult.
In fact, not many were willing to reveal their specific extraordinary abilities. While bloodline and natural talents were somewhat difficult to hide, the specific types of spells, spellcasting techniques, and battle skills each possessed were different trump cards.
Seeing everyone's expressions, Byrne knew his authority wasn't sufficient, and didn't insist on his request.