QR 3768 then FR 4271 at Barcelona
Strasbourg → Barcelona → Poznan
Timetable, Barcelona time
18:35QR 3768 from Strasbourg at the gatealso IB 5945, LL 5945, VY 8145
17:55FR 4271 to Poznan leaves the gate
23 h 20 apart on the timetable, overnight
FR 4271 leaves 23 h 20 after QR 3768 arrives on the timetable: more than half a day, so not a connection we count.