DL 516 then DL 4644 at Atlanta
Dallas → Atlanta → Moline
Timetable, Atlanta time
09:15DL 516 from Dallas at the gate
09:11DL 4644 to Moline leaves the gate
23 h 56 apart on the timetable, overnight
DL 4644 leaves 23 h 56 after DL 516 arrives on the timetable: more than half a day, so not a connection we count.