UA 745 then CV 69 at O'Hare
Atlanta → Chicago → Luxembourg
Timetable, Chicago time
14:29UA 745 from Atlanta at the gate
04:00CV 69 to Luxembourg leaves the gate
13 h 31 apart on the timetable, overnight
CV 69 leaves 13 h 31 after UA 745 arrives on the timetable: more than half a day, so not a connection we count.