How long does it take for Visa Office to request for PP after the interview

[maylius]

We had an interview towards our Permanent Resident Visa Applicaton in the first week of November this year (2014) but its now almost a month and we have not got any communication from the visa office up to now. I am wondering how long it takes for the Visa office to request for the PP after the interview.

NOTE: Our aunt applied for us as dependent children. We did our pre-medicals and also recently (September 2014) the DNA test ( As requested by VO )