A3 852 then U2 2756 at Zurich
Athens → Zurich → Edinburgh
Timetable, Zurich time
18:35A3 852 from Athens at the gate
14:15U2 2756 to Edinburgh leaves the gate
19 h 40 apart on the timetable, overnight
U2 2756 leaves 19 h 40 after A3 852 arrives on the timetable: more than half a day, so not a connection we count.