CZ 427 then AA 383 at O'Hare
Anchorage → Chicago → Pittsburgh
Timetable, Chicago time
05:24CZ 427 from Anchorage at the gate
18:17AA 383 to Pittsburgh leaves the gate
12 h 53 apart on the timetable
AA 383 leaves 12 h 53 after CZ 427 arrives on the timetable: more than half a day, so not a connection we count.