IB 1044 then IB 717 at Madrid
Mahón → Madrid → London Heathrow
Timetable, Madrid time
23:00IB 1044 from Mahón at the gate
13:15IB 717 to London Heathrow leaves the gatealso LA 1539, VY 5179, QR 5345, BA 7056, AA 8755
14 h 15 apart on the timetable, overnight
IB 717 leaves 14 h 15 after IB 1044 arrives on the timetable: more than half a day, so not a connection we count.