LA 6139 then OZ 211 at San Francisco
Boston → San Francisco → Seoul
Timetable, San Francisco time
00:24LA 6139 from Boston at the gate
23:00OZ 211 to Seoul leaves the gatealso SQ 5711, TG 6744, UA 7290
22 h 36 apart on the timetable
OZ 211 leaves 22 h 36 after LA 6139 arrives on the timetable: more than half a day, so not a connection we count.