DL 2279 then DL 2862 at Atlanta
Philadelphia → Atlanta → Oklahoma City
Timetable, Atlanta time
16:24DL 2279 from Philadelphia at the gate
15:20DL 2862 to Oklahoma City leaves the gate
22 h 56 apart on the timetable, overnight
DL 2862 leaves 22 h 56 after DL 2279 arrives on the timetable: more than half a day, so not a connection we count.