FR 2540 then SK 1582 at Madrid
Bucharest → Madrid → Stockholm
Timetable, Madrid time
13:55FR 2540 from Bucharest at the gate
12:30SK 1582 to Stockholm leaves the gate
22 h 35 apart on the timetable, overnight
SK 1582 leaves 22 h 35 after FR 2540 arrives on the timetable: more than half a day, so not a connection we count.