DL 1504 then DL 1324 at Atlanta
Pittsburgh → Atlanta → Washington
Timetable, Atlanta time
07:54DL 1504 from Pittsburgh at the gate
07:25DL 1324 to Washington leaves the gate
23 h 31 apart on the timetable, overnight
DL 1324 leaves 23 h 31 after DL 1504 arrives on the timetable: more than half a day, so not a connection we count.