UA 2258 then CV 32 at O'Hare
Denver → Chicago → Luxembourg
Timetable, Chicago time
22:46UA 2258 from Denver at the gate
18:40CV 32 to Luxembourg leaves the gate
19 h 54 apart on the timetable, overnight
CV 32 leaves 19 h 54 after UA 2258 arrives on the timetable: more than half a day, so not a connection we count.