OO 6058 then DL 2503 at O'Hare
Sioux City → Chicago → New York LaGuardia
Timetable, Chicago time
21:49OO 6058 from Sioux City at the gate
20:25DL 2503 to New York LaGuardia leaves the gate
22 h 36 apart on the timetable, overnight
DL 2503 leaves 22 h 36 after OO 6058 arrives on the timetable: more than half a day, so not a connection we count.