K4 537 then AA 4958 at O'Hare
Anchorage → Chicago → Sioux Falls
Timetable, Chicago time
23:39K4 537 from Anchorage at the gate
17:07AA 4958 to Sioux Falls leaves the gate
17 h 28 apart on the timetable, overnight
AA 4958 leaves 17 h 28 after K4 537 arrives on the timetable: more than half a day, so not a connection we count.