DL 169 then DL 747 at JFK
Barcelona → New York → Los Angeles
Timetable, New York time
13:41DL 169 from Barcelona at the gate
11:00DL 747 to Los Angeles leaves the gate
21 h 19 apart on the timetable, overnight
DL 747 leaves 21 h 19 after DL 169 arrives on the timetable: more than half a day, so not a connection we count.