K4 811 then UA 5021 at O'Hare
Anchorage → Chicago → Sioux City
Timetable, Chicago time
20:28K4 811 from Anchorage at the gate
16:20UA 5021 to Sioux City leaves the gate
19 h 52 apart on the timetable, overnight
UA 5021 leaves 19 h 52 after K4 811 arrives on the timetable: more than half a day, so not a connection we count.