Not sure if you are still interested but I completed a Diploma Business Marketing plus Cert 4 public relations plus Cert 4 Business Development all in the one year.
At Meadowbank tafe.
Units in marketing were the same as pr & Bd we had the option of doing I think 6 extra days and an extra arvo for a term to get extra quals.
To my knowledge it is generally a year f/t or 2 years depending on the diploma
