How to get past superday

0/4 on Superdays at Elite boutiques so far and I know that only 10% of people who get the superday end up with the offer. My problem is that I haven;t be able to connect with the interviewer on a personal level whether that's analyst or associate or VP and MD. I was wondering how you guys with offers were able to connect with your interviewer - is it simply just the tone and inflection in your voice?

Also got grilled on my why banking at Guggenheim. After I gave my reasons which were the generic ones like the learning curve, being around top notch talent, and getting able to contribute to meaningful work. Many people in interviews are giving the same answers so what are interviewers looking for with this question.

I keep getting grilled on why specifically investment banking and have tied my answers to how I Q&A computer science major and want to apply my problem solving skills to different business applications.