UA 1779 then CV 12 at O'Hare
San Diego → Chicago → Luxembourg
Timetable, Chicago time
20:22UA 1779 from San Diego at the gate
14:55CV 12 to Luxembourg leaves the gate
18 h 33 apart on the timetable, overnight
CV 12 leaves 18 h 33 after UA 1779 arrives on the timetable: more than half a day, so not a connection we count.