BA 567 then BA 416 at Heathrow
Milan Linate → London → Tenerife South
Timetable, London time
12:25BA 567 from Milan Linate at the gate
12:05BA 416 to Tenerife South leaves the gate
23 h 40 apart on the timetable, overnight
BA 416 leaves 23 h 40 after BA 567 arrives on the timetable: more than half a day, so not a connection we count.