AA 3970 then BR 643 at O'Hare
Wilmington → Chicago → Anchorage
Timetable, Chicago time
13:51AA 3970 from Wilmington at the gate
11:55BR 643 to Anchorage leaves the gate
22 h 04 apart on the timetable, overnight
BR 643 leaves 22 h 04 after AA 3970 arrives on the timetable: more than half a day, so not a connection we count.