AA 4689 then DL 819 at Atlanta
Washington National → Atlanta → San Diego
Timetable, Atlanta time
19:44AA 4689 from Washington National at the gate
19:23DL 819 to San Diego leaves the gate
23 h 39 apart on the timetable, overnight
DL 819 leaves 23 h 39 after AA 4689 arrives on the timetable: more than half a day, so not a connection we count.