AA 1894 then GG 9723 at O'Hare
Dallas-Fort Worth → Chicago → Seoul
Timetable, Chicago time
23:59AA 1894 from Dallas-Fort Worth at the gate
23:00GG 9723 to Seoul leaves the gate
23 h 01 apart on the timetable, overnight
GG 9723 leaves 23 h 01 after AA 1894 arrives on the timetable: more than half a day, so not a connection we count.