This doesn't really compute. ) It doesn't necessarly mean the subject didn't sleep all day. We don't know much about these all-nighters, except that there were reportedly more than one.
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New2grammarHe had not been sleeping for more than one night when he made the run?I read the whole story you link to and I have to say the use of "all-nighter" in this context doesn't make sense. It especially doesn't make sense in the plural.