HCLTech Seniot Software Engineer interview questions

Everything went very good still the outcome was just opposite The interviewer was quite friendly and inter-active. He asked me to explain on my projects and was quite impressed with my explanation as he told me several times that I am quite good in explaining, more technical than he is, even he couldn't speak with same intensity till that long as my interview was of 45 mins and finally he was most impressed of my communication skills. At the end of the interview he asked me if I have any questions but I didn't ask anything but he keep on briefing about their projects and how the work is going on daily basis, what specifically required in their project. Even he told me that the processing will be quite fast and the next round will be taken by his manager and he suggested me on the topics to focus on. And finally asked me to wait outside for the result. After 2 mins the person who called my name for the interview told me that I am not selected; I was really unsure what might be the reason for this as I haven't seen any indication from the interviewer.