KD 216 then UA 1606 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
10:55KD 216 from Anchorage at the gate
10:30UA 1606 to Boston leaves the gate
23 h 35 apart on the timetable, overnight
UA 1606 leaves 23 h 35 after KD 216 arrives on the timetable: more than half a day, so not a connection we count.