OZ 6344 then UA 5621 at San Francisco
St Louis → San Francisco → Eugene
Timetable, San Francisco time
21:41OZ 6344 from St Louis at the gate
11:15UA 5621 to Eugene leaves the gatealso NZ 9189
13 h 34 apart on the timetable, overnight
UA 5621 leaves 13 h 34 after OZ 6344 arrives on the timetable: more than half a day, so not a connection we count.