Nagarro Sr Developer interview questions

I received a mail regarding the opportunity, I applied through it, the first round was online test, I have no clue why would you ask aptitude question from an experienced developer. The next round was Technical interview, it went well and within 12 hours I received invitation for 2nd technical round, even that round went very well, and this time it took them 4-5 days to revert, that's too after I keep asking for update. I am not sure what is the background discussion but clearly it was like let's hire multiple candidates, and then we will select one from them and will reject the rest despite clearing their rounds.

Got a call from recruiter at 9 AM for interview at 9:30 AM, very unprofessional Recruiter. 1st round was technical round on Angular, .Net and SQL. It was a very in-depth discussion on authorisation and authentication then basic .Net questions along with one coding question followed by couple of SQL questions.