DL 5390 then DL 1037 at Detroit
Grand Rapids → Detroit → Fort Lauderdale
Timetable, Detroit time
15:20DL 5390 from Grand Rapids at the gate
14:49DL 1037 to Fort Lauderdale leaves the gate
23 h 29 apart on the timetable, overnight
DL 1037 leaves 23 h 29 after DL 5390 arrives on the timetable: more than half a day, so not a connection we count.