WN 261 then DL 919 at Atlanta
Tampa → Atlanta → Las Vegas
Timetable, Atlanta time
19:40WN 261 from Tampa at the gate
18:20DL 919 to Las Vegas leaves the gate
22 h 40 apart on the timetable, overnight
DL 919 leaves 22 h 40 after WN 261 arrives on the timetable: more than half a day, so not a connection we count.