F9 1549 then DL 1366 at Atlanta
Jacksonville → Atlanta → Chattanooga
Timetable, Atlanta time
21:38F9 1549 from Jacksonville at the gate
21:29DL 1366 to Chattanooga leaves the gate
23 h 51 apart on the timetable, overnight
DL 1366 leaves 23 h 51 after F9 1549 arrives on the timetable: more than half a day, so not a connection we count.