 Springsteen biographer Dave Marsh later wrote of the sparks flying from the interaction, "You could have written it off just to musical magic ... if you were dumb as a doorstop", and said that even those that oblivious could not have missed the meaning of the body language during their performance on "One Step Up", in which a man lists metaphors for the failing love in his marriage, expresses his lack of desire to find it again, and starts casting a wandering eye about.Springsteen and Scialfa's involvement had thus been rumored since early on the tour.Suspicion and confirmation came in stages.