UA 3872 then KD 211 at O'Hare
Pensacola → Chicago → Anchorage
Timetable, Chicago time
14:43UA 3872 from Pensacola at the gate
12:00KD 211 to Anchorage leaves the gate
21 h 17 apart on the timetable, overnight
KD 211 leaves 21 h 17 after UA 3872 arrives on the timetable: more than half a day, so not a connection we count.