U2 2705 then BT 684 at Barcelona
Bristol → Barcelona → Riga
Timetable, Barcelona time
21:10U2 2705 from Bristol at the gate
17:00BT 684 to Riga leaves the gatealso IB 7848
19 h 50 apart on the timetable, overnight
BT 684 leaves 19 h 50 after U2 2705 arrives on the timetable: more than half a day, so not a connection we count.