EC 7206 then EC 7103 at Barcelona
Southampton → Barcelona → Basel
Timetable, Barcelona time
22:20EC 7206 from Southampton at the gate
19:15EC 7103 to Basel leaves the gate
20 h 55 apart on the timetable, overnight
EC 7103 leaves 20 h 55 after EC 7206 arrives on the timetable: more than half a day, so not a connection we count.