DL 1737 then DL 549 at Atlanta
Chattanooga → Atlanta → Las Vegas
Timetable, Atlanta time
13:05DL 1737 from Chattanooga at the gate
13:00DL 549 to Las Vegas leaves the gate
23 h 55 apart on the timetable, overnight
DL 549 leaves 23 h 55 after DL 1737 arrives on the timetable: more than half a day, so not a connection we count.