At what point did Il Duce decide to take the boy's side? And, according to the site, he is their father. So why would he be looking to take them out in the scene where he has the 6 guns? How did he know where they/Rocco would be at that point?
And who tips off the brothers about the hotel room meeting on the payphone in the police station?
If these bits are reeeally obvious in the movie, then those are the times I went for a pee or for a coffee, so apologies in advance.