DL 539 then DL 2065 at Atlanta
Portland (Oregon) → Atlanta → Philadelphia
Timetable, Atlanta time
19:27DL 539 from Portland (Oregon) at the gate
18:55DL 2065 to Philadelphia leaves the gate
23 h 28 apart on the timetable, overnight
DL 2065 leaves 23 h 28 after DL 539 arrives on the timetable: more than half a day, so not a connection we count.