OZ 6344 then UA 368 at San Francisco
St Louis → San Francisco → Chicago O'Hare
Timetable, San Francisco time
10:36OZ 6344 from St Louis at the gate
23:30UA 368 to Chicago O'Hare leaves the gatealso AC 4372, NZ 9307
12 h 54 apart on the timetable
UA 368 leaves 12 h 54 after OZ 6344 arrives on the timetable: more than half a day, so not a connection we count.