set the snipe and clam at each other and then take advantage of both; earn a profit without working for it; effortlessly to reap the spoils of a contest fought by others; play off one person against another; profit from others' conflict; reap advantages from both sides without lifting a finger; reap the benefit; reap the spoils of victory without lifting a finger; reap third party profit; sit idle and rake in a profit; The third party benefits when two parties fight each other.