SentinelOne interview questions

I got a call from HR where she asked me about my background and skills and scheduled the first round. First round was a DSA based round where they asked me variation of tree path sum question, which I took bit of time to answer. I thank that still they qualified me for the second round where it was Go LLD round where question was to parallelise a serial execution of code, which I feel I did very well and interviewer was also happy. After that I got to know that the feedback was negetive which I dont think should be a case. I think it was my notice period which they were bothered about and I would have appreciated if they were more straight forward on the rejection reason