BT 683 then FR 9015 at Barcelona
Riga → Barcelona → London Stansted
Timetable, Barcelona time
16:15BT 683 from Riga at the gatealso IB 7847
12:20FR 9015 to London Stansted leaves the gate
20 h 05 apart on the timetable, overnight
FR 9015 leaves 20 h 05 after BT 683 arrives on the timetable: more than half a day, so not a connection we count.