DL 2925 then DL 919 at Atlanta
Mobile → Atlanta → Las Vegas
Timetable, Atlanta time
20:35DL 2925 from Mobile at the gate
18:20DL 919 to Las Vegas leaves the gate
21 h 45 apart on the timetable, overnight
DL 919 leaves 21 h 45 after DL 2925 arrives on the timetable: more than half a day, so not a connection we count.