UA 2657 then CV 26 at O'Hare
Atlanta → Chicago → Luxembourg
Timetable, Chicago time
20:07UA 2657 from Atlanta at the gate
15:05CV 26 to Luxembourg leaves the gate
18 h 58 apart on the timetable, overnight
CV 26 leaves 18 h 58 after UA 2657 arrives on the timetable: more than half a day, so not a connection we count.