UA 1748 then CV 69 at O'Hare
Phoenix → Chicago → Luxembourg
Timetable, Chicago time
14:35UA 1748 from Phoenix at the gate
04:00CV 69 to Luxembourg leaves the gate
13 h 25 apart on the timetable, overnight
CV 69 leaves 13 h 25 after UA 1748 arrives on the timetable: more than half a day, so not a connection we count.