K4 221 then AA 4931 at O'Hare
Anchorage → Chicago → Sioux Falls
Timetable, Chicago time
13:41K4 221 from Anchorage at the gate
09:40AA 4931 to Sioux Falls leaves the gate
19 h 59 apart on the timetable, overnight
AA 4931 leaves 19 h 59 after K4 221 arrives on the timetable: more than half a day, so not a connection we count.