AA 2745 then GG 9723 at O'Hare
Las Vegas → Chicago → Seoul
Timetable, Chicago time
23:35AA 2745 from Las Vegas at the gate
23:00GG 9723 to Seoul leaves the gate
23 h 25 apart on the timetable, overnight
GG 9723 leaves 23 h 25 after AA 2745 arrives on the timetable: more than half a day, so not a connection we count.