DL 988 then DL 1892 at Atlanta
New York LaGuardia → Atlanta → Chattanooga
Timetable, Atlanta time
16:28DL 988 from New York LaGuardia at the gate
14:30DL 1892 to Chattanooga leaves the gate
22 h 02 apart on the timetable, overnight
DL 1892 leaves 22 h 02 after DL 988 arrives on the timetable: more than half a day, so not a connection we count.