CV 12 then UA 5869 at O'Hare
Anchorage → Chicago → Sioux Falls
Timetable, Chicago time
19:11CV 12 from Anchorage at the gate
16:00UA 5869 to Sioux Falls leaves the gate
20 h 49 apart on the timetable, overnight
UA 5869 leaves 20 h 49 after CV 12 arrives on the timetable: more than half a day, so not a connection we count.