OO 6058 then UA 5869 at O'Hare
Sioux City → Chicago → Sioux Falls
Timetable, Chicago time
21:49OO 6058 from Sioux City at the gate
16:00UA 5869 to Sioux Falls leaves the gate
18 h 11 apart on the timetable, overnight
UA 5869 leaves 18 h 11 after OO 6058 arrives on the timetable: more than half a day, so not a connection we count.