OZ 212 then UA 581 at San Francisco
Seoul → San Francisco → Cleveland
Timetable, San Francisco time
14:30OZ 212 from Seoul at the gatealso SQ 5712, TG 6747, UA 7289
12:45UA 581 to Cleveland leaves the gate
22 h 15 apart on the timetable, overnight
UA 581 leaves 22 h 15 after OZ 212 arrives on the timetable: more than half a day, so not a connection we count.