AA 2570 then GG 4955 at O'Hare
Salt Lake City → Chicago → Seoul
Timetable, Chicago time
21:55AA 2570 from Salt Lake City at the gate
17:55GG 4955 to Seoul leaves the gate
20 h apart on the timetable, overnight
GG 4955 leaves 20 h after AA 2570 arrives on the timetable: more than half a day, so not a connection we count.