FR 270 then IB 5484 at Barcelona
Milan → Barcelona → Istanbul
Timetable, Barcelona time
17:10FR 270 from Milan at the gate
17:05IB 5484 to Istanbul leaves the gatealso LL 5484, VY 8612
23 h 55 apart on the timetable, overnight
IB 5484 leaves 23 h 55 after FR 270 arrives on the timetable: more than half a day, so not a connection we count.