BA 1358 then LS 803 at Manchester
London Heathrow → Manchester → Barcelona
Timetable, Manchester time
07:35BA 1358 from London Heathrow at the gate
07:30LS 803 to Barcelona leaves the gate
23 h 55 apart on the timetable, overnight
LS 803 leaves 23 h 55 after BA 1358 arrives on the timetable: more than half a day, so not a connection we count.