But....did you use your Coinbase account to conduct any illegal transactions? You didn't answer a very straight forward question.
That seems like a roundabout way of saying, "No, I did not conduct any illegal transactions".
I said clearly that I made _one_ transaction (a wire transfer) and I said clearly that they questioned me on my income. Their concern is "where did you get your money" to which I answered them thoroughly.
That the transactions were believed to be legitimate was strongly implied in the same sentence, which just required a little deduction on your part.
I don't get the point of your comment.