Only happened 1 other time- 4 OT in NBA playoff history 4 OT Boston Celtics 111 Syracuse Nationals105 1952-53 (PL) / Mar 21, 1953 / at Boston / Eastern Division Semifinals https://www.landofbasketball.com/statistics/most_overtimes_pl.htm
The longest game in NBA history was played on January 6, 1951 between the Indianapolis Olympians and the Rochester Royals. After 78 minutes of gameplay and a record 6 overtimes, the longest basketball game concluded with a relatively low score of 75-73 in favor of the Olympians. Regular season