Keep in mind that the "two consecutive quarters" is just snapshots of the monthly data at 3 month marks. They get revised over time.
It's completely possible that data from Q2 will be revised upwards and there won't be two consecutive quarters of negative GPD in the future. The Q2 data has already been revised upwards once.
We've only recently seen nominal GDP declines in 2008 and 2020.
Exact same amount of data points for inputs as 2% inflation.
Very simple model
Inflation=v1/v2
D(inflation)=sqrt((D(v1)/v2)^2+(v1/v2^2 D(v2))^2)
Suppose
D(v1)=c sqrt(v1)
D(v2)=c sqrt(v2)
D(inflation)=c sqrt(v1/v2^2+v1^2/v2^3)= c sqrt(inflation+inflation^2)/sqrt(v2)
So can be seen that the leading term for uncertainty in inflation is linear with inflation.
Find a new word for whatever you're describing because the rest of us are speaking the same language.