Kia ora,
This is a PSA based on a sample of 2, so pinch of salt etc
I was eligible for citizenship in June last year, based on the 'only need 8 months per year so you can apply a few months early' thing. I'm confident I was indeed eligible when I applied.
However, hindsight being 20/20, I should have waited the extra 4 months, and I'd advise anyone else to do the same!
I've since learned out that because I applied before the online calculator said I was eligible [again, to be clear - I was eligible, but the online calculator couldn't easily tell this], my case requires manual checks. And that means I'm in a 'slow queue'.
It's been 12 months and I still haven't been assigned to a Case Officer!
My husband waited until the online calculator said 'yes' (i.e. the full five years). He got approved in under 2 months.
I did email Citizenship to ask if I should resubmit so as to get put in the 'fast queue' (that's where I would be if I applied now) and they said it won't make a difference. I'm skeptical about that, but I'm just going to sit tight at this point.
Anyway, I'm not complaining about the 'fast queue/slow queue' thing, I do understand it makes sense that more complex cases take longer. But at this point, I'm really wishing I'd just waited those extra few months, so I thought I'd put this information out here in case anyone is in the same boat.
All will be fine, I'm not in any particular hurry I guess, but if I'd applied last October instead of last June, I reckon I'd have been approved, ceremonied, and passported by now!