ET 3608 then AA 1457 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
07:16ET 3608 from Anchorage at the gate
20:00AA 1457 to Boston leaves the gate
12 h 44 apart on the timetable
AA 1457 leaves 12 h 44 after ET 3608 arrives on the timetable: more than half a day, so not a connection we count.