Deloitte UX-UI Designer interview questions

I went through two rounds of interviews. The first one was with the HR representative and the Lead Designer I was supposed to work with. The interview lasted 30 minutes and included classical questions. At the end, they proposed a design challenge, giving me a week to redesign the homepage of Deloitte Digital. After submitting the material, I was invited for a second interview where I had the opportunity to present my work. Overall, it went well; they seemed enthusiastic. At the end of the call, they mentioned that they would give me a result by the beginning of the next week. I then received an email informing me of some delays. I replied, reaffirming my interest, and they thanked me. However, I did not hear back. After two weeks, I decided to ask for an update on my application process and immediately received a rejection email. I then decided to ask the Lead Designer for feedback to understand where I could have improved, but I was told that they were not able to give feedback. This was disappointing, especially since they had seemed very nice up until that point.

Plain and simple,No phone interview, only video interview in the first round on HireVue and gave around 7 days to complete the interview. Ask about past experience, background, how you handle tasks. Then they ghosted me.