OZ 6344 then DL 750 at San Francisco
St Louis → San Francisco → Atlanta
Timetable, San Francisco time
21:41OZ 6344 from St Louis at the gate
16:00DL 750 to Atlanta leaves the gate
18 h 19 apart on the timetable, overnight
DL 750 leaves 18 h 19 after OZ 6344 arrives on the timetable: more than half a day, so not a connection we count.