On 22 June, the day after that epic engagement ended, she rendezvoused with and 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. The enemy escorts turned and pursued "Bang", dropping 125 depth charges over her as she went deep to avoid destruction. When "Bang" finally surfaced, the convoy was disappearing over the horizon.