AA 4784 then CV 12 at O'Hare
Cleveland → Chicago → Luxembourg
Timetable, Chicago time
21:29AA 4784 from Cleveland at the gate
03:46CV 12 to Luxembourg leaves the gate
6 h 17 apart on the timetable, overnight
The last days
AA 4784 and CV 12 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.