Electrical Consultants Electrical Engineer interview questions

Interview process was not your average interview. Pretty easygoing and simple questions and expected simple explanations of electrical engineering fundamentals. Interview was on a friday after 5PM which I was not too keen about. They made me wait several weeks with no answer. I reached back out to my contact who works there and still received no reply. It is common business practice to at least tell a candidate if they passed or failed an interview, not to leave them hanging around and guessing if they did well or not. Extremely unprofessional.