TP 4401 then WN 3257 at San Francisco
Boston → San Francisco → St Louis
Timetable, San Francisco time
20:55TP 4401 from Boston at the gate
13:05WN 3257 to St Louis leaves the gate
16 h 10 apart on the timetable, overnight
WN 3257 leaves 16 h 10 after TP 4401 arrives on the timetable: more than half a day, so not a connection we count.