UA 5657 then CV 69 at O'Hare
Omaha → Chicago → Luxembourg
Timetable, Chicago time
15:00UA 5657 from Omaha at the gate
04:00CV 69 to Luxembourg leaves the gate
13 h apart on the timetable, overnight
CV 69 leaves 13 h after UA 5657 arrives on the timetable: more than half a day, so not a connection we count.