OZ 6344 then UA 805 at San Francisco
St Louis → San Francisco → Seoul
Timetable, San Francisco time
10:36OZ 6344 from St Louis at the gate
23:45UA 805 to Seoul leaves the gatealso OZ 6621
13 h 09 apart on the timetable
UA 805 leaves 13 h 09 after OZ 6344 arrives on the timetable: more than half a day, so not a connection we count.