DL 587 then DL 1892 at Atlanta
Mexico City → Atlanta → Chattanooga
Timetable, Atlanta time
18:28DL 587 from Mexico City at the gate
14:30DL 1892 to Chattanooga leaves the gate
20 h 02 apart on the timetable, overnight
DL 1892 leaves 20 h 02 after DL 587 arrives on the timetable: more than half a day, so not a connection we count.