ET 3608 then AA 1387 at O'Hare
Anchorage → Chicago → Denver
Timetable, Chicago time
07:16ET 3608 from Anchorage at the gate
21:05AA 1387 to Denver leaves the gate
13 h 49 apart on the timetable
AA 1387 leaves 13 h 49 after ET 3608 arrives on the timetable: more than half a day, so not a connection we count.