DL 3176 then DL 1692 at Atlanta
Mobile → Atlanta → Philadelphia
Timetable, Atlanta time
14:24DL 3176 from Mobile at the gate
14:16DL 1692 to Philadelphia leaves the gate
23 h 52 apart on the timetable, overnight
DL 1692 leaves 23 h 52 after DL 3176 arrives on the timetable: more than half a day, so not a connection we count.