BT 683 then FR 8215 at Barcelona
Riga → Barcelona → London Stansted
Timetable, Barcelona time
13:20BT 683 from Riga at the gatealso IB 7847
11:25FR 8215 to London Stansted leaves the gate
22 h 05 apart on the timetable, overnight
FR 8215 leaves 22 h 05 after BT 683 arrives on the timetable: more than half a day, so not a connection we count.