OZ 6344 then UA 1603 at San Francisco
St Louis → San Francisco → Atlanta
Timetable, San Francisco time
21:41OZ 6344 from St Louis at the gate
21:30UA 1603 to Atlanta leaves the gatealso CA 7245, VA 8401, NZ 9000
23 h 49 apart on the timetable, overnight
UA 1603 leaves 23 h 49 after OZ 6344 arrives on the timetable: more than half a day, so not a connection we count.