DL 1536 then DL 4644 at Atlanta
St Louis → Atlanta → Moline
Timetable, Atlanta time
09:45DL 1536 from St Louis at the gate
09:11DL 4644 to Moline leaves the gate
23 h 26 apart on the timetable, overnight
DL 4644 leaves 23 h 26 after DL 1536 arrives on the timetable: more than half a day, so not a connection we count.