DL 3122 then DL 66 at Atlanta
Pittsburgh → Atlanta → Rome
Timetable, Atlanta time
22:00DL 3122 from Pittsburgh at the gate
20:00DL 66 to Rome leaves the gate
22 h apart on the timetable, overnight
DL 66 leaves 22 h after DL 3122 arrives on the timetable: more than half a day, so not a connection we count.