UA 3577 then KD 211 at O'Hare
Rochester (ROC) → Chicago → Anchorage
Timetable, Chicago time
14:29UA 3577 from Rochester (ROC) at the gate
12:00KD 211 to Anchorage leaves the gate
21 h 31 apart on the timetable, overnight
KD 211 leaves 21 h 31 after UA 3577 arrives on the timetable: more than half a day, so not a connection we count.