UA 3910 then CV 27 at O'Hare
Newark → Chicago → Luxembourg
Timetable, Chicago time
13:47UA 3910 from Newark at the gate
17:40CV 27 to Luxembourg leaves the gate
3 h 53 apart on the timetable
The last days
UA 3910 and CV 27 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.