MathWorks Software Engineer interview questions

Two telephonic interviews. First one with software developer. He asked basic questions based on my resume and my experience. While i was discussing my profile, he kept on asking in between the technical terms i used like design patterns, etc. Discussed about the software team and their work. Very easy not at all tough. Scheduled for second interview with very high experienced person (i actually saw his linkedin profile). Interview started with his work profile and development. Next he asked my introduction and then my C++ projects. He had my resume in front of him, so he read different projects and then asked about some of them like what did the project do and other stuff. Then he asked me to discuss one of my c++ project and how did i do it. I explained it and while explaining various data structures and template libraries i used, he asked questions based on the technology used in the project. Interview was good and not very tough, but I did not get any further call. The interview was sounded like non-american guy coz i felt he was having problem in speaking in english. He actually was fumbling and that confused me a lot. I had to say "sorry i didn't get you" everytime he asked or said something.