Andrew Ely, then you had a non imm O-A based on retirement I guess. Because a non imm O based on retirement, without the A, is also 90 days max. in country.
, don't want to hijack this post, but is the extension stamp for e.g. 30 days, different from the 60 day 'covid extension' ? I mean besides the 60 days given to the OP ? I know it depends a bit of the imm office you have to go if they want you to do a regular 30 days extension first or one gives the 60 days 'covid extension' right away and sometimes a 'under consideration' first given. 'under consideration' you can see clearly, but I'm not aware of differences in extension stamps. What I see, my year extension stamp, looks the same. Thanks !!!