UA 1147 then WN 2989 at San Francisco
Washington → San Francisco → St Louis
Timetable, San Francisco time
11:22UA 1147 from Washington at the gatealso VA 8386, NZ 9177, MS 9322
11:15WN 2989 to St Louis leaves the gate
23 h 53 apart on the timetable, overnight
WN 2989 leaves 23 h 53 after UA 1147 arrives on the timetable: more than half a day, so not a connection we count.