DL 426 then F9 4286 at Detroit
Portland (Maine) → Detroit → Orlando
Timetable, Detroit time
14:53DL 426 from Portland (Maine) at the gate
09:47F9 4286 to Orlando leaves the gate
18 h 54 apart on the timetable, overnight
F9 4286 leaves 18 h 54 after DL 426 arrives on the timetable: more than half a day, so not a connection we count.