FR 3877 then IB 725 at Madrid
Tangier → Madrid → London Heathrow
Timetable, Madrid time
17:35FR 3877 from Tangier at the gate
17:20IB 725 to London Heathrow leaves the gatealso LA 1704, VY 5180, BA 7058
23 h 45 apart on the timetable, overnight
IB 725 leaves 23 h 45 after FR 3877 arrives on the timetable: more than half a day, so not a connection we count.