SK 1811 then FR 2507 at Barcelona
Stockholm → Barcelona → Cologne
Timetable, Barcelona time
16:55SK 1811 from Stockholm at the gate
14:10FR 2507 to Cologne leaves the gate
21 h 15 apart on the timetable, overnight
FR 2507 leaves 21 h 15 after SK 1811 arrives on the timetable: more than half a day, so not a connection we count.