A long time! I was advised 50-60 days when I called two weeks ago. We are still waiting, my DD2 is 4 months today although we didn't lodge till a few weeks after she was born, it has been well over 60 days now.

FTB is backpaid. BB starts from when it is processed and goes for 6 months from that point.

I wouldn't go into your local branch because they will just direct you to a phone.