AA 5471 then DL 4692 at Atlanta
Washington National → Atlanta → Brunswick
Timetable, Atlanta time
08:30AA 5471 from Washington National at the gate
20:39DL 4692 to Brunswick leaves the gate
12 h 09 apart on the timetable
DL 4692 leaves 12 h 09 after AA 5471 arrives on the timetable: more than half a day, so not a connection we count.