BA 212 then BA 546 at Heathrow
Boston → London → Bologna
Timetable, London time
06:25BA 212 from Boston at the gate
20:25BA 546 to Bologna leaves the gate
14 h apart on the timetable
BA 546 leaves 14 h after BA 212 arrives on the timetable: more than half a day, so not a connection we count.