VS 104 then BA 590 at Heathrow
Atlanta → London → Venezia
Timetable, London time
06:25VS 104 from Atlanta at the gate
06:10BA 590 to Venezia leaves the gate
23 h 45 apart on the timetable, overnight
BA 590 leaves 23 h 45 after VS 104 arrives on the timetable: more than half a day, so not a connection we count.