5X 602 then DL 5664 at O'Hare
Louisville → Chicago → New York JFK
Timetable, Chicago time
03:355X 602 from Louisville at the gate
10:30DL 5664 to New York JFK leaves the gate
6 h 55 apart on the timetable
The last days
5X 602 and DL 5664 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.