Could several galleys cooperate against one?

Could two or three galleys work together to force an enemy ship into a bad position?

Yes, but only with room and formation discipline; Carthage's bunched approach prevented it from exploiting its numerical advantage at Aegates.

Two or three ships could cooperate when formation and room allowed it. Carthage had about 250 warships against Rome's 200, so a well-formed line might have extended its wings around the Roman formation. Instead, the hurried Carthaginian approach left the ships bunched and disordered, allowing the Roman line to spread around them and preventing effective concentration of the extra hulls.