CM 2528 then WN 2989 at San Francisco
Ontario → San Francisco → St Louis
Timetable, San Francisco time
20:10CM 2528 from Ontario at the gatealso AC 4112
13:05WN 2989 to St Louis leaves the gate
16 h 55 apart on the timetable, overnight
WN 2989 leaves 16 h 55 after CM 2528 arrives on the timetable: more than half a day, so not a connection we count.