DL 641 then DL 1892 at Atlanta
Cancún → Atlanta → Chattanooga
Timetable, Atlanta time
16:25DL 641 from Cancún at the gate
14:30DL 1892 to Chattanooga leaves the gate
22 h 05 apart on the timetable, overnight
DL 1892 leaves 22 h 05 after DL 641 arrives on the timetable: more than half a day, so not a connection we count.