3O 391 then IB 1151 at Madrid
Tangier → Madrid → Porto
Timetable, Madrid time
18:353O 391 from Tangier at the gate
15:40IB 1151 to Porto leaves the gate
21 h 05 apart on the timetable, overnight
IB 1151 leaves 21 h 05 after 3O 391 arrives on the timetable: more than half a day, so not a connection we count.