OZ 6344 then UA 1885 at San Francisco
St Louis → San Francisco → Detroit
Timetable, San Francisco time
10:36OZ 6344 from St Louis at the gate
08:26UA 1885 to Detroit leaves the gate
21 h 50 apart on the timetable, overnight
UA 1885 leaves 21 h 50 after OZ 6344 arrives on the timetable: more than half a day, so not a connection we count.