QR 3615 then TK 1856 at Barcelona
Catania → Barcelona → Istanbul
Timetable, Barcelona time
22:35QR 3615 from Catania at the gatealso IB 5803, LL 5803, VY 6119
18:20TK 1856 to Istanbul leaves the gate
19 h 45 apart on the timetable, overnight
TK 1856 leaves 19 h 45 after QR 3615 arrives on the timetable: more than half a day, so not a connection we count.