BA 488 then LA 5792 at Barcelona
London Heathrow → Barcelona → Gran Canaria
Timetable, Barcelona time
18:25BA 488 from London Heathrow at the gate
13:55LA 5792 to Gran Canaria leaves the gate
19 h 30 apart on the timetable, overnight
LA 5792 leaves 19 h 30 after BA 488 arrives on the timetable: more than half a day, so not a connection we count.