F9 1147 then DL 1892 at Atlanta
Philadelphia → Atlanta → Chattanooga
Timetable, Atlanta time
19:54F9 1147 from Philadelphia at the gate
14:30DL 1892 to Chattanooga leaves the gate
18 h 36 apart on the timetable, overnight
DL 1892 leaves 18 h 36 after F9 1147 arrives on the timetable: more than half a day, so not a connection we count.