GovTech Software Developer Intern interview questions

Interview was suppose to be 20-25 minutes long, but ended up taking 1 hour because I was describing quite a bit. We discussed my projects in my portfolio and major, a system architecture question and supposedly some coding questions that we did not cover due to the lack of time.

Javascript questions and answers followed by use of React for web development. It was a long interview of 3hours. They spent the whole 3 hours only to reject me. It felt strange and underwhelming.