DL 937 then DL 1892 at Atlanta
Tucson → Atlanta → Chattanooga
Timetable, Atlanta time
20:31DL 937 from Tucson at the gate
14:30DL 1892 to Chattanooga leaves the gate
17 h 59 apart on the timetable, overnight
DL 1892 leaves 17 h 59 after DL 937 arrives on the timetable: more than half a day, so not a connection we count.