FR 2251 then TK 1854 at Barcelona
Marrakesh → Barcelona → Istanbul
Timetable, Barcelona time
16:15FR 2251 from Marrakesh at the gate
12:20TK 1854 to Istanbul leaves the gate
20 h 05 apart on the timetable, overnight
TK 1854 leaves 20 h 05 after FR 2251 arrives on the timetable: more than half a day, so not a connection we count.