WN 2104 then KL 5638 at San Francisco
Denver → San Francisco → New York JFK
Timetable, San Francisco time
10:40WN 2104 from Denver at the gate
23:05KL 5638 to New York JFK leaves the gate
12 h 25 apart on the timetable
KL 5638 leaves 12 h 25 after WN 2104 arrives on the timetable: more than half a day, so not a connection we count.