KL 5893 then KL 5638 at San Francisco
Los Angeles → San Francisco → New York JFK
Timetable, San Francisco time
15:54KL 5893 from Los Angeles at the gate
22:25KL 5638 to New York JFK leaves the gate
6 h 31 apart on the timetable
The last days
KL 5893 and KL 5638 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.