DL 3122 then DL 545 at Atlanta
Pittsburgh → Atlanta → San Francisco
Timetable, Atlanta time
22:00DL 3122 from Pittsburgh at the gate
20:19DL 545 to San Francisco leaves the gate
22 h 19 apart on the timetable, overnight
DL 545 leaves 22 h 19 after DL 3122 arrives on the timetable: more than half a day, so not a connection we count.