DL 1187 then G4 3473 at Boston
Detroit → Boston → Fort Lauderdale
Timetable, Boston time
23:54DL 1187 from Detroit at the gate
12:34G4 3473 to Fort Lauderdale leaves the gate
12 h 40 apart on the timetable, overnight
G4 3473 leaves 12 h 40 after DL 1187 arrives on the timetable: more than half a day, so not a connection we count.