F9 1147 then DL 8844 at Atlanta
Philadelphia → Atlanta → Detroit
Timetable, Atlanta time
19:54F9 1147 from Philadelphia at the gate
09:28DL 8844 to Detroit leaves the gate
13 h 34 apart on the timetable, overnight
DL 8844 leaves 13 h 34 after F9 1147 arrives on the timetable: more than half a day, so not a connection we count.