DL 1400 then DL 4033 at Atlanta
St Louis → Atlanta → South Bend
Timetable, Atlanta time
14:52DL 1400 from St Louis at the gate
14:36DL 4033 to South Bend leaves the gate
23 h 44 apart on the timetable, overnight
DL 4033 leaves 23 h 44 after DL 1400 arrives on the timetable: more than half a day, so not a connection we count.