DL 2571 then DL 1892 at Atlanta
Knoxville → Atlanta → Chattanooga
Timetable, Atlanta time
19:17DL 2571 from Knoxville at the gate
14:30DL 1892 to Chattanooga leaves the gate
19 h 13 apart on the timetable, overnight
DL 1892 leaves 19 h 13 after DL 2571 arrives on the timetable: more than half a day, so not a connection we count.