QR 3752 then EC 7173 at Barcelona
Nice → Barcelona → Berlin
Timetable, Barcelona time
10:15QR 3752 from Nice at the gatealso IB 5475, LA 5805, VY 8135
07:20EC 7173 to Berlin leaves the gate
21 h 05 apart on the timetable, overnight
EC 7173 leaves 21 h 05 after QR 3752 arrives on the timetable: more than half a day, so not a connection we count.