FR 3801 then IB 5092 at Barcelona
Birmingham (UK) → Barcelona → Porto
Timetable, Barcelona time
15:35FR 3801 from Birmingham (UK) at the gate
13:00IB 5092 to Porto leaves the gate
21 h 25 apart on the timetable, overnight
IB 5092 leaves 21 h 25 after FR 3801 arrives on the timetable: more than half a day, so not a connection we count.