DL 5161 then DL 174 at Atlanta
Montgomery → Atlanta → Milan
Timetable, Atlanta time
20:35DL 5161 from Montgomery at the gate
19:50DL 174 to Milan leaves the gate
23 h 15 apart on the timetable, overnight
DL 174 leaves 23 h 15 after DL 5161 arrives on the timetable: more than half a day, so not a connection we count.