DL 968 then DL 1892 at Atlanta
New York LaGuardia → Atlanta → Chattanooga
Timetable, Atlanta time
19:35DL 968 from New York LaGuardia at the gate
14:30DL 1892 to Chattanooga leaves the gate
18 h 55 apart on the timetable, overnight
DL 1892 leaves 18 h 55 after DL 968 arrives on the timetable: more than half a day, so not a connection we count.