DL 3902 then CV 5335 at O'Hare
Detroit → Chicago → Luxembourg
Timetable, Chicago time
10:39DL 3902 from Detroit at the gate
18:25CV 5335 to Luxembourg leaves the gate
7 h 46 apart on the timetable
The last days
DL 3902 and CV 5335 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.