DL 1179 then DL 1892 at Atlanta
San Diego → Atlanta → Chattanooga
Timetable, Atlanta time
15:15DL 1179 from San Diego at the gate
14:30DL 1892 to Chattanooga leaves the gate
23 h 15 apart on the timetable, overnight
DL 1892 leaves 23 h 15 after DL 1179 arrives on the timetable: more than half a day, so not a connection we count.