Process was normal :
1. case study (announced 3 days before the interview),
2. numerical and comprehension test,
3. interview with manager (only if test is successful, this was announced just before the tests).
No feedback about the case study (quite difficult, around 2/2,5 days of work), no interview with the manager.
The interview with the hiring manager takes place only if test are successful, they do not take into account the case study and your personality.
This shows a lot about the management in the company, unfortunately.
Bad recruitment experience at Wizz Air, no respect for candidates.