Grab (India) UI/User Experience Designer interview questions

The first round was HR round, that was went well. Then she told me that I'll put you for second round.. the wait time was 20-25mins I went for second round... Then technical one. The guy was just looking at my face and designs what i was showing, he didn't asked me a single question related to technical. After a week the HR gave me an update that, we are looking for more experienced people. I have 4yrs of experience, he didn't even asked me a single technical questions. I don't know on what basis they rejected me.