QR 3711 then EW 2521 at Barcelona
Mahón → Barcelona → Stuttgart
Timetable, Barcelona time
14:35QR 3711 from Mahón at the gate
09:20EW 2521 to Stuttgart leaves the gate
18 h 45 apart on the timetable, overnight
EW 2521 leaves 18 h 45 after QR 3711 arrives on the timetable: more than half a day, so not a connection we count.