OO 6058 then AA 1503 at O'Hare
Sioux City → Chicago → Cancún
Timetable, Chicago time
10:13OO 6058 from Sioux City at the gate
08:25AA 1503 to Cancún leaves the gate
22 h 12 apart on the timetable, overnight
AA 1503 leaves 22 h 12 after OO 6058 arrives on the timetable: more than half a day, so not a connection we count.