UA 642 then K4 810 at O'Hare
Cleveland → Chicago → Anchorage
Timetable, Chicago time
09:25UA 642 from Cleveland at the gate
04:00K4 810 to Anchorage leaves the gate
18 h 35 apart on the timetable, overnight
K4 810 leaves 18 h 35 after UA 642 arrives on the timetable: more than half a day, so not a connection we count.