DL 2956 then DL 8844 at Atlanta
Philadelphia → Atlanta → Detroit
Timetable, Atlanta time
17:53DL 2956 from Philadelphia at the gate
09:28DL 8844 to Detroit leaves the gate
15 h 35 apart on the timetable, overnight
DL 8844 leaves 15 h 35 after DL 2956 arrives on the timetable: more than half a day, so not a connection we count.