K4 221 then AA 4748 at O'Hare
Anchorage → Chicago → Pittsburgh
Timetable, Chicago time
13:41K4 221 from Anchorage at the gate
09:45AA 4748 to Pittsburgh leaves the gate
20 h 04 apart on the timetable, overnight
AA 4748 leaves 20 h 04 after K4 221 arrives on the timetable: more than half a day, so not a connection we count.