On 22 June, the day after that epic engagement ended, she rendezvoused with Growler and Seahorse off Formosa to form a coordinated attack group. Growler was detached just one day before the unit's run in with southbound convoy Hi-67 of more than 15 ships. Bang made a submerged attack and fired 10 torpedoes at three overlapping targets, all of which the submarine claims to have sunk, although the postwar records do not confirm the claim.