Can my friend on a retirement visa in Thailand apply for a 60-day extension instead of a one-year renewal?

A friend on a retirement visa in Thailand is seeking information about the possibility of applying for a one-time 60-day extension instead of renewing for a year, as he plans to travel to Spain soon. Comments indicate that while a 60-day COVID extension might be an option, it could complicate his return, necessitating a new Non-O visa application if he wishes to come back later. It is suggested that if he plans to return to Thailand within the next year, he should consider applying for the full one-year extension and obtaining a re-entry permit before leaving.