It is in addition to the roughly 28 days for the sponsor approval. Apparently the way to read that number is that is the time it takes to process 80% of the applications.
USA goes through Ottawa. The time is 13 months. It's about mid-range for speed. File were transferred to LA when Buffalo closed. Before that, you could pick the office, but now it's all Ottawa. They occasionally send a file to the local VO for "special processing" but that rarely happens. I think we have one person on the spreadsheet that goes gotten transferred to LA since the transition to Ottawa was completed.
13 months means 80% of applications are finished in 13 months or less. For normal applications it seems 7-8 months is a much more realistic time. If you need an interview or the VO continually loses your paperwork (and that has happened to a handful of applicants), that will take longer. Other things, like not paying all fees upfront, not including the medical or police check - all of these extend your process - and if you don't include a complete application, Ottawa is no longer held to 13 months for your processing!
Basically, if you put together a good application package with sufficient proof of a genuine, ongoing relationship, you will most likely be finished well before 13 months.......