QR 3671 then EW 2521 at Barcelona
Marseille → Barcelona → Stuttgart
Timetable, Barcelona time
10:45QR 3671 from Marseille at the gate
09:20EW 2521 to Stuttgart leaves the gate
22 h 35 apart on the timetable, overnight
EW 2521 leaves 22 h 35 after QR 3671 arrives on the timetable: more than half a day, so not a connection we count.