AY 1252 then AY 439 at Helsinki
Budapest → Helsinki → Oulu
Timetable, Helsinki time
15:00AY 1252 from Budapest at the gate
13:35AY 439 to Oulu leaves the gate
22 h 35 apart on the timetable, overnight
AY 439 leaves 22 h 35 after AY 1252 arrives on the timetable: more than half a day, so not a connection we count.