FR 6712 then BA 461 at Madrid
Budapest → Madrid → London Heathrow
Timetable, Madrid time
18:10FR 6712 from Budapest at the gate
13:55BA 461 to London Heathrow leaves the gate
19 h 45 apart on the timetable, overnight
BA 461 leaves 19 h 45 after FR 6712 arrives on the timetable: more than half a day, so not a connection we count.