DL 4912 then DL 346 at Atlanta
Dothan → Atlanta → Denver
Timetable, Atlanta time
08:15DL 4912 from Dothan at the gate
08:05DL 346 to Denver leaves the gate
23 h 50 apart on the timetable, overnight
DL 346 leaves 23 h 50 after DL 4912 arrives on the timetable: more than half a day, so not a connection we count.