Mathworks Phone Interview

Disappointed with the phone interviewer. The entire interview he was typing. Even while asking the question he was typing (I'd have understood if he typed during my response for note taking). Icing on the cake was when I asked him a clarifying question and he replied "mhmm". 🤦‍♂️ Asked a second time and got "okay". Third time, he was quiet for ~20 seconds, answered my question and then asked me to "please hurry up". The entire time he was typing. He ended the interview 10 minutes early, saying "Okay, time's up, bye". I have never, in my time interviewing, had this kind of experience before. Did I do something wrong? He sounded royally irritated. Was very short with me.