QR 3692 then A3 711 at Barcelona
Rome → Barcelona → Athens
Timetable, Barcelona time
17:05QR 3692 from Rome at the gate
11:20A3 711 to Athens leaves the gate
18 h 15 apart on the timetable, overnight
A3 711 leaves 18 h 15 after QR 3692 arrives on the timetable: more than half a day, so not a connection we count.