QR 3722 then A3 713 at Barcelona
Firenze → Barcelona → Athens
Timetable, Barcelona time
22:45QR 3722 from Firenze at the gate
19:35A3 713 to Athens leaves the gate
20 h 50 apart on the timetable, overnight
A3 713 leaves 20 h 50 after QR 3722 arrives on the timetable: more than half a day, so not a connection we count.