Rothschild GFA Summer Analyst Interview Help!! (NYC)

So I come from a semi-target and had a first round phone interview w/ Rothschild for the GFA summer analyst program. I was wondering how their second round or super day is structured (the person that interviewed me said he's not sure if the next step is another phone interview or straight to super day, but said he's putting my recommendation in for the next round), i.e. emphasis on fit or technical.

I am an econ major, but have taken accounting/had finance internships. Please help as I'm not sure what the focus of the interview will be on and have heard that they are really focused on technicals and make it really hard.

Thanks.