DL 974 then DL 1892 at Atlanta
New York LaGuardia → Atlanta → Chattanooga
Timetable, Atlanta time
17:32DL 974 from New York LaGuardia at the gate
14:30DL 1892 to Chattanooga leaves the gate
20 h 58 apart on the timetable, overnight
DL 1892 leaves 20 h 58 after DL 974 arrives on the timetable: more than half a day, so not a connection we count.