DL 2453 then DL 1374 at Atlanta
Grand Rapids → Atlanta → Louisville
Timetable, Atlanta time
08:05DL 2453 from Grand Rapids at the gate
07:45DL 1374 to Louisville leaves the gate
23 h 40 apart on the timetable, overnight
DL 1374 leaves 23 h 40 after DL 2453 arrives on the timetable: more than half a day, so not a connection we count.