CZ 435 then AA 4931 at O'Hare
Anchorage → Chicago → Sioux Falls
Timetable, Chicago time
15:58CZ 435 from Anchorage at the gate
09:40AA 4931 to Sioux Falls leaves the gate
17 h 42 apart on the timetable, overnight
AA 4931 leaves 17 h 42 after CZ 435 arrives on the timetable: more than half a day, so not a connection we count.