Tetra Pak Future Talent Program - Service Engineer interview questions

Got a call the day before the first interview, which was an online interview, but I still had to go to the offices. Got through to the second round of interviews, two weeks later, which were treated as a mere formality, it felt like they had already chosen the candidate and just had to do the interview. After another two weeks I was notified that I was unsuccessful, but did not get any other feedback as to why. After a total of about 6 hours of interviewing, it would help if they said why I was unsuccessful.

First I was called via phone to asked about a couple of question about myself and why I applied in Tetra Pak. they called after screening my resume. After that there will be a virtual interview where they will give some question and study cases, then tried to answered with recorded video. In my case, it was about telling the function of material given just by its property and some PLC. And then there will be face to face interview (mine was held online because of the pandemic). There are 3 people interviewed me. Two of them are the Manager and Senior Manager and the other is from the HR team (the one interviewed me by phone). In this interview what they all asking is about me as a personal and professional experiences, some study cases and about your competencies as well. It took about almost 2 months to be informed from this to the next step. And the las they said was a role-playing interview, but unfortunately they didn't move forward with me so I can't tell about it.