IB 5353 then FR 3792 at Barcelona
Milan → Barcelona → Birmingham (UK)
Timetable, Barcelona time
11:55IB 5353 from Milan at the gate
11:40FR 3792 to Birmingham (UK) leaves the gate
23 h 45 apart on the timetable, overnight
FR 3792 leaves 23 h 45 after IB 5353 arrives on the timetable: more than half a day, so not a connection we count.