And if they were intended to be two seperate stories, wouldn't they be two different sections then?
no. not at all.
the sections are collections of similar stories based on periods of the religion, not separations between the stories. this is also an arbitrary system, possibly devised by the redactor of genesis much like the christian numbering system.
the first section is adam to noah. the second is noah, and the third, fourth, fifth abraham. the sixth is isaac, and the sevent jacob. etc. it's sort of like sticking tabs into important points in a textbook.
the two creation stories are not separated because they are two traditional stories about creation, and thusly, both go in the "creation" section.
but you have to read the text for the break down of the individual stories. my text is written in prose, with spaces between the individual stories. the chapter numbers are off to the side, and don't always coincide with the spaces. chapter three for instance actually starts the verse before.