IB 5353 then FR 8215 at Barcelona
Milan → Barcelona → London Stansted
Timetable, Barcelona time
11:55IB 5353 from Milan at the gate
11:25FR 8215 to London Stansted leaves the gate
23 h 30 apart on the timetable, overnight
FR 8215 leaves 23 h 30 after IB 5353 arrives on the timetable: more than half a day, so not a connection we count.