FR 13 then FR 9811 at Barcelona
Vienna → Barcelona → London Stansted
Timetable, Barcelona time
14:25FR 13 from Vienna at the gate
14:10FR 9811 to London Stansted leaves the gate
23 h 45 apart on the timetable, overnight
FR 9811 leaves 23 h 45 after FR 13 arrives on the timetable: more than half a day, so not a connection we count.