DL 343 then DL 1175 at Atlanta
Washington National → Atlanta → Richmond
Timetable, Atlanta time
09:55DL 343 from Washington National at the gate
23:05DL 1175 to Richmond leaves the gate
13 h 10 apart on the timetable
DL 1175 leaves 13 h 10 after DL 343 arrives on the timetable: more than half a day, so not a connection we count.