BA 210 then BA 594 at Heathrow
Tampa → London → Venezia
Timetable, London time
09:30BA 210 from Tampa at the gate
08:05BA 594 to Venezia leaves the gate
22 h 35 apart on the timetable, overnight
BA 594 leaves 22 h 35 after BA 210 arrives on the timetable: more than half a day, so not a connection we count.