I had a call with HR and then an Online interview round. In the online interview, I couldn't navigate out of the screen and video was being recorded to ensure I don't use my phone. They expected me to remember python syntax and R syntax as if it's some board exam. My entire methodology was correct but just because I couldn't remember a function name I couldn't clear the round. You need to understand that these things are always googled and it's the methodology that matters.