UA 2137 then K4 810 at O'Hare
Madison → Chicago → Anchorage
Timetable, Chicago time
07:44UA 2137 from Madison at the gate
04:00K4 810 to Anchorage leaves the gate
20 h 16 apart on the timetable, overnight
K4 810 leaves 20 h 16 after UA 2137 arrives on the timetable: more than half a day, so not a connection we count.