ET 3608 then AA 523 at O'Hare
Anchorage → Chicago → Washington National
Timetable, Chicago time
07:16ET 3608 from Anchorage at the gate
19:29AA 523 to Washington National leaves the gate
12 h 13 apart on the timetable
AA 523 leaves 12 h 13 after ET 3608 arrives on the timetable: more than half a day, so not a connection we count.