UA 375 then KD 211 at O'Hare
Boston → Chicago → Anchorage
Timetable, Chicago time
15:32UA 375 from Boston at the gate
12:00KD 211 to Anchorage leaves the gate
20 h 28 apart on the timetable, overnight
KD 211 leaves 20 h 28 after UA 375 arrives on the timetable: more than half a day, so not a connection we count.