K4 601 then UA 4447 at O'Hare
Anchorage → Chicago → Sioux Falls
Timetable, Chicago time
02:10K4 601 from Anchorage at the gate
21:30UA 4447 to Sioux Falls leaves the gate
19 h 20 apart on the timetable
UA 4447 leaves 19 h 20 after K4 601 arrives on the timetable: more than half a day, so not a connection we count.