AA 478 then LL 2630 at Miami
New York LaGuardia → Miami → Barcelona (BCN)
Timetable, Miami time
11:41AA 478 from New York LaGuardia at the gate
02:45LL 2630 to Barcelona (BCN) leaves the gate
15 h 04 apart on the timetable, overnight
LL 2630 leaves 15 h 04 after AA 478 arrives on the timetable: more than half a day, so not a connection we count.