OO 6058 then AA 6345 at O'Hare
Sioux City → Chicago → Lexington
Timetable, Chicago time
10:13OO 6058 from Sioux City at the gate
08:06AA 6345 to Lexington leaves the gate
21 h 53 apart on the timetable, overnight
AA 6345 leaves 21 h 53 after OO 6058 arrives on the timetable: more than half a day, so not a connection we count.