FR 210 then FR 3977 at Dublin
London Stansted → Dublin → Barcelona
Timetable, Dublin time
13:25FR 210 from London Stansted at the gate
08:50FR 3977 to Barcelona leaves the gate
19 h 25 apart on the timetable, overnight
FR 3977 leaves 19 h 25 after FR 210 arrives on the timetable: more than half a day, so not a connection we count.