You know, this is one that I've pondered myself. The version I've heard far more often, and which I've come to regard as the "correct" way to use the structure, is the first -- "The wasn't even , let alone ". The other way strikes me as wrong, but I'll admit to having had to sit and think about it for a while to be sure.
-- Bob
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...The President is on the line
As ninety-nine crab rangoons go by...
-- Bob
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...The President is on the line
As ninety-nine crab rangoons go by...