Summer Intern Equity Delta One Strats Desk

I have applied online, Cv and Cover letter, I've applied for a S&T summer internship in Equity division but I receive an email for the Strats/Quant summer internship within the equity delta one strats desk, the process took almost 2 month from the time I have applied and the email for the interview. The interviewer was french, he was kind, we did all the interview in french, the interview last 45minutes exactly. I have no specific advice to give because that depends really on with who you are talking on the telephone, I had a lot of technical question but easy question and he was here to help me find the answer, I answer right to all the question but I did not get to the next stage of the interview process and I have absolutely no idea why, and they don't give you any feedback on your interview, I didn't like this