DL 3122 then DL 1508 at Atlanta
Pittsburgh → Atlanta → San Antonio
Timetable, Atlanta time
22:00DL 3122 from Pittsburgh at the gate
21:55DL 1508 to San Antonio leaves the gate
23 h 55 apart on the timetable, overnight
DL 1508 leaves 23 h 55 after DL 3122 arrives on the timetable: more than half a day, so not a connection we count.