OO 6058 then AA 4991 at O'Hare
Sioux City → Chicago → Nashville
Timetable, Chicago time
09:24OO 6058 from Sioux City at the gate
08:50AA 4991 to Nashville leaves the gate
23 h 26 apart on the timetable, overnight
AA 4991 leaves 23 h 26 after OO 6058 arrives on the timetable: more than half a day, so not a connection we count.