FR 2512 then FR 3039 at Barcelona
Cologne → Barcelona → Prague
Timetable, Barcelona time
08:30FR 2512 from Cologne at the gate
21:50FR 3039 to Prague leaves the gate
13 h 20 apart on the timetable
FR 3039 leaves 13 h 20 after FR 2512 arrives on the timetable: more than half a day, so not a connection we count.