CV 251 then AA 2054 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
21:32CV 251 from Anchorage at the gate
11:00AA 2054 to Boston leaves the gate
13 h 28 apart on the timetable, overnight
AA 2054 leaves 13 h 28 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.