@Graham *****
I have a NON -O based on over 50 ( retirement) which is extended, every year until the day I decide to not extend.
The Visa is still a NON-O.
Using the phrase extension of stay tells you nothing about the visa.
If I said I have an extension of stay, what paperwork do i
Need to renew for another year.
What's the first question im going to be asked?
Answer, what visa do you have?