DL 924 then DL 1892 at Atlanta
San Diego → Atlanta → Chattanooga
Timetable, Atlanta time
19:59DL 924 from San Diego at the gate
14:30DL 1892 to Chattanooga leaves the gate
18 h 31 apart on the timetable, overnight
DL 1892 leaves 18 h 31 after DL 924 arrives on the timetable: more than half a day, so not a connection we count.