DL 2779 then DL 1892 at Atlanta
Boston → Atlanta → Chattanooga
Timetable, Atlanta time
15:10DL 2779 from Boston at the gate
14:30DL 1892 to Chattanooga leaves the gate
23 h 20 apart on the timetable, overnight
DL 1892 leaves 23 h 20 after DL 2779 arrives on the timetable: more than half a day, so not a connection we count.