BR 608 then AA 4931 at O'Hare
Anchorage → Chicago → Sioux Falls
Timetable, Chicago time
20:03BR 608 from Anchorage at the gate
09:40AA 4931 to Sioux Falls leaves the gate
13 h 37 apart on the timetable, overnight
AA 4931 leaves 13 h 37 after BR 608 arrives on the timetable: more than half a day, so not a connection we count.