You might get more concrete answers if you post in the school specific threads. McCombs applicants for example, will have a better idea about McCombs. Here, we have no idea where you applied.
FYI, if the interviewer was an alum, he has no idea when the response will come.
The school is not list on one of the school, it is a California school with not high rank. The interviewer is adcom. There is no problem regarding whatever the decision is, but at least give out a decision. There is no decision date listed on its website. So basically no way of knowing when we should expect the final decision, but at least can you respond to email.