UA 4778 then CV 69 at O'Hare
Colorado Springs → Chicago → Luxembourg
Timetable, Chicago time
15:53UA 4778 from Colorado Springs at the gate
04:00CV 69 to Luxembourg leaves the gate
12 h 07 apart on the timetable, overnight
CV 69 leaves 12 h 07 after UA 4778 arrives on the timetable: more than half a day, so not a connection we count.