DL 4654 then DL 834 at Atlanta
Knoxville → Atlanta → Las Vegas
Timetable, Atlanta time
09:44DL 4654 from Knoxville at the gate
21:52DL 834 to Las Vegas leaves the gate
12 h 08 apart on the timetable
DL 834 leaves 12 h 08 after DL 4654 arrives on the timetable: more than half a day, so not a connection we count.