UA 367 then KL 5638 at San Francisco
Washington → San Francisco → New York JFK
Timetable, San Francisco time
01:29UA 367 from Washington at the gatealso LH 7530, VA 8388, NZ 9181
22:25KL 5638 to New York JFK leaves the gate
20 h 56 apart on the timetable
KL 5638 leaves 20 h 56 after UA 367 arrives on the timetable: more than half a day, so not a connection we count.