You get a 7 days extension only. I asked a similar question about my Indian friend. Thailand gives a 30+ and covid extensions to all countries except Sr Lanka , india, congo, uganda, Bangladesh.
The officers told us to take the covid extension first and return for the 60 day spouse, or skip the 60 spouse and do the Non-O next. They required 15 days+ on the visas for approval time
i did what the officers told me just two days ago. I asked for the spouse 60 day and they told me first take the covid extension and wrote on the application approving 60 days, so whatever bro