OZ 6344 then UA 1031 at San Francisco
St Louis → San Francisco → Houston
Timetable, San Francisco time
21:41OZ 6344 from St Louis at the gate
14:30UA 1031 to Houston leaves the gatealso EK 6418, NH 7336, CA 7344, VA 8083, NZ 9196
16 h 49 apart on the timetable, overnight
UA 1031 leaves 16 h 49 after OZ 6344 arrives on the timetable: more than half a day, so not a connection we count.