CA 8413 then UA 5566 at O'Hare
Anchorage → Chicago → Pittsburgh
Timetable, Chicago time
02:51CA 8413 from Anchorage at the gate
15:50UA 5566 to Pittsburgh leaves the gate
12 h 59 apart on the timetable
UA 5566 leaves 12 h 59 after CA 8413 arrives on the timetable: more than half a day, so not a connection we count.