BA 484 then LA 5792 at Barcelona
London Heathrow → Barcelona → Gran Canaria
Timetable, Barcelona time
16:00BA 484 from London Heathrow at the gate
13:55LA 5792 to Gran Canaria leaves the gate
21 h 55 apart on the timetable, overnight
LA 5792 leaves 21 h 55 after BA 484 arrives on the timetable: more than half a day, so not a connection we count.