DL 8800 then LL 2630 at Miami
Boston → Miami → Barcelona (BCN)
Timetable, Miami time
14:40DL 8800 from Boston at the gate
02:45LL 2630 to Barcelona (BCN) leaves the gate
12 h 05 apart on the timetable, overnight
LL 2630 leaves 12 h 05 after DL 8800 arrives on the timetable: more than half a day, so not a connection we count.