Neither are marriage extension, but they are known as such in the popular jargon, that's my point. Because to get the 60 days extension, you need to be married or have a child, which is the same for the 12 months. You can't get the 60 days extension without a marriage certificate or proof that you are the dad. So both are basically marriage extension because without being married you won't qualified for the 60 days extension. You are right in terminology, ofc.
Yes, but it's not called a "marriage extension", but everyone call it as such. I use easy wording because Visiting Thai Family, etc, just end up confusing people.
Useless to call their office. I get conflicting info every time I have ever called immigration office. I'll have to drive 2h to see if possible unless someone did it recently know for sure that it's not possible. In KK Expats group someone did it in October. I got denied in December in Udon.
Yes, my wording was wrong. Most people know the 60 days extension, and the yearly extension, as "marriage extension". So I usually use that terminology. Both are for the reason you said which imply that it's basically an extension because you are married and want to see your wife.
Both 60 days and yearly extension are technically not "marriage extension", as both are for "visiting Thai spouse". But it's an easier jargon to call both "marriage extension".
Also, an admin and Visa expert can't answer my question. I'm a visa expert and I can't. Only someone who went to Khon Kaen recently to do 60 days extension can answer that question. It's office dependent, each office set their own rules which can change every few months.
As I said in my post. I'm well aware of what I'm asking, that's why I said in my post to only comment if you know the subject. i don't need help understanding what I need, I've been here 12 years and doing plenty of such extensions already. I asked if the services I want is available in Khon Kaen, since it was discontinued in Udon Thani 4-5 months ago.