DL 706 then DL 1148 at Atlanta
Denver → Atlanta → Knoxville
Timetable, Atlanta time
18:01DL 706 from Denver at the gate
14:31DL 1148 to Knoxville leaves the gate
20 h 30 apart on the timetable, overnight
DL 1148 leaves 20 h 30 after DL 706 arrives on the timetable: more than half a day, so not a connection we count.