A single suitor didn't have much energy. However, when dozens of suitors worked together to investigate, the energy was amazing.
Even the poorest suitors had at least three or five subordinates. If they didn't have such wealth, could they marry a female baron with a territory? Only in their dreams.
Some powerful suitors such as Connor and Drucker even had dozens of subordinates. If added up, the dozens of suitors at least had 300 or 400 subordinates in total. Many of those subordinates had no ability, so they just ran errands. However, there were also many subordinates who had some abilities. If they really worked together, even a powerful earl couldn't resist it if he was off guard, let alone a baron.
In the past, they had naturally been hostile competitors, so it had been impossible to cooperate. But now, at least for the purpose of "investigation," they cooperated.