F9 1563 then DL 4666 at Atlanta
Orlando → Atlanta → Knoxville
Timetable, Atlanta time
09:02F9 1563 from Orlando at the gate
08:55DL 4666 to Knoxville leaves the gate
23 h 53 apart on the timetable, overnight
DL 4666 leaves 23 h 53 after F9 1563 arrives on the timetable: more than half a day, so not a connection we count.