A3 606 then EC 8065 at Gatwick
Athens → London → Barcelona
Timetable, London time
11:10A3 606 from Athens at the gate
09:10EC 8065 to Barcelona leaves the gate
22 h apart on the timetable, overnight
EC 8065 leaves 22 h after A3 606 arrives on the timetable: more than half a day, so not a connection we count.