the interviewer was so kind. and the process took a day with the technical and the hr for few there was only technical. be cool and stay confident that is what they expect. Don't hesitate to say "NO" when u don't know but don't bluff cause they r clever enough to catch u. trying to answer is fine but don't "bluff". the people here clear the interview if u r clear with your basics. they don't want the ml/ai kind people but the person who can fit into the projects.But the person has to be patient to wait for the results cause it may take weeks to get your successful results.for me i believe the interview may depend on the panel too.