DL 725 then DL 1892 at Atlanta
San Diego → Atlanta → Chattanooga
Timetable, Atlanta time
18:13DL 725 from San Diego at the gate
14:30DL 1892 to Chattanooga leaves the gate
20 h 17 apart on the timetable, overnight
DL 1892 leaves 20 h 17 after DL 725 arrives on the timetable: more than half a day, so not a connection we count.