DL 1271 then DL 726 at Atlanta
Fort Lauderdale → Atlanta → Boston
Timetable, Atlanta time
14:35DL 1271 from Fort Lauderdale at the gate
13:50DL 726 to Boston leaves the gate
23 h 15 apart on the timetable, overnight
DL 726 leaves 23 h 15 after DL 1271 arrives on the timetable: more than half a day, so not a connection we count.