EC 3749 then LA 5790 at Barcelona
Milan → Barcelona → Tenerife North
Timetable, Barcelona time
21:30EC 3749 from Milan at the gate
12:15LA 5790 to Tenerife North leaves the gate
14 h 45 apart on the timetable, overnight
LA 5790 leaves 14 h 45 after EC 3749 arrives on the timetable: more than half a day, so not a connection we count.