DL 1510 then DL 4033 at Atlanta
Miami → Atlanta → South Bend
Timetable, Atlanta time
14:55DL 1510 from Miami at the gate
14:36DL 4033 to South Bend leaves the gate
23 h 41 apart on the timetable, overnight
DL 4033 leaves 23 h 41 after DL 1510 arrives on the timetable: more than half a day, so not a connection we count.