AA 1368 then DL 1892 at Atlanta
Miami → Atlanta → Chattanooga
Timetable, Atlanta time
18:04AA 1368 from Miami at the gate
14:30DL 1892 to Chattanooga leaves the gate
20 h 26 apart on the timetable, overnight
DL 1892 leaves 20 h 26 after AA 1368 arrives on the timetable: more than half a day, so not a connection we count.