Bentley: I just intercepted an email from Dimitri. He's ordered his guards to ring the boat's bell when the coast is clear.
Sly: Coast is clear for what?
Bentley: Of that I'm uncertain. Ring the bell and follow him without being seen, then maybe we'll find out what he's hiding.
― Outside of Dimitri's boat
After Sly's reconnaissance of the Clockwerk tail feathers, Bentley realized that he would need more information about Dimitri Lousteau's operation to be able to come up with a plan for the Cooper Gang to steal the tail feathers. Bentley suggested that Sly discreetly follow Dimitri if the opportunity ever came up, as it could lead to more information.
Bentley was able to intercept a message from Dimitri to his guards, telling them to ring his boat's bell when "the coast is clear." To find out what Dimitri had planned, Bentley instructed Sly to ring the bell and follow him when he emerged from the boat.
After Sly rang the bell, Dimitri came out of his boat and began walking around town. Sly followed closely, taking care not to be seen by either Dimitri or his guards. Dimitri eventually reached a door across from the bistro and unlocked it by entering a code. With Sly watching, the gang was able to get the code so that they could enter the room. Bentley figured out that the door led to the nightclub's aqua pump, which gave Bentley an idea for another mission. Bentley then noted that Murray was the man for that mission.