OO 6058 then UA 4802 at O'Hare
Sioux City → Chicago → Milwaukee
Timetable, Chicago time
21:49OO 6058 from Sioux City at the gate
13:55UA 4802 to Milwaukee leaves the gate
16 h 06 apart on the timetable, overnight
UA 4802 leaves 16 h 06 after OO 6058 arrives on the timetable: more than half a day, so not a connection we count.