AA 9600 then CV 6426 at O'Hare
London → Chicago → Luxembourg
Timetable, Chicago time
15:35AA 9600 from London at the gate
19:30CV 6426 to Luxembourg leaves the gate
3 h 55 apart on the timetable
The last days
AA 9600 and CV 6426 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.