UA 1564 then CV 26 at O'Hare
Dallas-Fort Worth → Chicago → Luxembourg
Timetable, Chicago time
18:46UA 1564 from Dallas-Fort Worth at the gate
15:05CV 26 to Luxembourg leaves the gate
20 h 19 apart on the timetable, overnight
CV 26 leaves 20 h 19 after UA 1564 arrives on the timetable: more than half a day, so not a connection we count.