Masha Allah! Very good educational credentials! I think you were hired even before you stepped into the interview room. This is why they asked easy questions.

On the email front, I don't think they get hung up in the system. Everyone should get them at the same time. No point in waiting for the inevitable! I still believe that they should send in a courtesy email to unsuccessful candidates as well. It is standard practice that SBP doesn't seem to partake in.