Altimetrik interview questions

The first and second rounds were technical, covering advanced JavaScript and React.js concepts, and I managed to clear them. The third round was the Experience Level (EL) round, but it was conducted by the HR team instead of a manager. They only asked four to five questions and then simply rejected me. I received appreciation in the second round, and the HR team even asked for all my documents for the background verification (BGV), yet they still rejected me in the third round. My question is: why did they collect all the documents if they were going to reject me? The Altimetrik HR team displayed the worst behavior, and they didn’t mention the reason for my rejection in the EL round.

Recruiter call to check the technical fit for this role followed by a technical interview. The interview was scheduled for one hour. However the interviewer seemed like he was in a hurry, probably coz of time zone difference, he had joined from IST zone. He finished the interview within 30mins and didn’t give enough time to answer the questions.