You might have noticed in the google of 'a honor' that the 'a' is not the article (at least in the first pages or two that I looked at), but the name of the top honor roll-- 'the A honor roll'. I don't believe that the speaker distinguishes between 'honor' and 'privilege' or the ways in which they are combined in your examples, Mav-- the phrases are stylistic formulae. Other expressions?
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