Hot answers tagged facebook-pages
A possible scenario is that the username was taken at one point and then the page was deleted / username changed of the page. This makes the username unavailable for an unspecified period of time.
I don't now that this is conclusive (eg applies in general) but the top right corner of the first link in the OP has: and the second: so it seems the Create Page or Join Group may be the indication required.
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