UA 2053 then CV 69 at O'Hare
Newark → Chicago → Luxembourg
Timetable, Chicago time
15:13UA 2053 from Newark at the gate
04:00CV 69 to Luxembourg leaves the gate
12 h 47 apart on the timetable, overnight
CV 69 leaves 12 h 47 after UA 2053 arrives on the timetable: more than half a day, so not a connection we count.