DL 755 then DL 1443 at Atlanta
Las Vegas → Atlanta → Kansas City
Timetable, Atlanta time
12:46DL 755 from Las Vegas at the gate
12:20DL 1443 to Kansas City leaves the gate
23 h 34 apart on the timetable, overnight
DL 1443 leaves 23 h 34 after DL 755 arrives on the timetable: more than half a day, so not a connection we count.