ET 3608 then AA 1312 at O'Hare
Anchorage → Chicago → Jacksonville
Timetable, Chicago time
07:16ET 3608 from Anchorage at the gate
19:30AA 1312 to Jacksonville leaves the gate
12 h 14 apart on the timetable
AA 1312 leaves 12 h 14 after ET 3608 arrives on the timetable: more than half a day, so not a connection we count.