WN 191 then DL 670 at San Francisco
St Louis → San Francisco → New York JFK
Timetable, San Francisco time
10:50WN 191 from St Louis at the gate
23:05DL 670 to New York JFK leaves the gatealso AM 4305, VS 4848, KQ 7055
12 h 15 apart on the timetable
DL 670 leaves 12 h 15 after WN 191 arrives on the timetable: more than half a day, so not a connection we count.