AA 1253 then CV 6866 at O'Hare
San Francisco → Chicago → Luxembourg
Timetable, Chicago time
17:05AA 1253 from San Francisco at the gate
19:50CV 6866 to Luxembourg leaves the gate
2 h 45 apart on the timetable
The last days
AA 1253 and CV 6866 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.