Checkpoint interview questions

After HR screening round, interview was scheduled within 1 week. First round was with VP. He was good and shared details about the company and all. Second round was of technical, the panel did not even ask about myself or my project or anything. Directly jumped to the interview questions. They were expecting me to have fluency in C++ and Swift. First interviewer seemed to be satisfied and once I told that, I am not so frequent with Swift as, I am not so much in touch, but I know things. So, after a single question, he stopped the interview, stating, as you are not in touch no need to continue. This was so abrupt!