DL 9964 then DL 1549 at Atlanta
Grand Rapids → Atlanta → Tallahassee
Timetable, Atlanta time
18:19DL 9964 from Grand Rapids at the gate
13:12DL 1549 to Tallahassee leaves the gate
18 h 53 apart on the timetable, overnight
DL 1549 leaves 18 h 53 after DL 9964 arrives on the timetable: more than half a day, so not a connection we count.