AA 947 then CI 5233 at O'Hare
Boston → Chicago → Anchorage
Timetable, Chicago time
09:30AA 947 from Boston at the gate
21:55CI 5233 to Anchorage leaves the gate
12 h 25 apart on the timetable
CI 5233 leaves 12 h 25 after AA 947 arrives on the timetable: more than half a day, so not a connection we count.