FR 9810 then FR 3193 at Barcelona
London Stansted → Barcelona → Riga
Timetable, Barcelona time
19:05FR 9810 from London Stansted at the gate
16:20FR 3193 to Riga leaves the gate
21 h 15 apart on the timetable, overnight
FR 3193 leaves 21 h 15 after FR 9810 arrives on the timetable: more than half a day, so not a connection we count.