We also have two creation stories in Genesis as chapter 2 .
correction -- there are no chapter dividers in Moses' text. It is the same account being expanded on. In Genesis 2, no sun, no air, no water, no moon because those details already covered.
Taking every chapter in the Bible then deleting all the chapters before it as if that is what "context" and "exegesis" is all about -- never worked in any book of the Bible much less Genesis.
Its important because you are extending the convention of chapters inserted at later dates as if they are wooden rules and this is needed to get to your "chapter 2" is not the same story as "chapter 1".
If that were true, why tell it differently?
Details in chapter 2 after vs 4 are in the form of expansion of the narrative. Adding "details" about marriage, about which one was created first, about naming the animals, about the forbidden tree, about the institution of marriage -- when in chapter 1 the only detail you get is that mankind is made on day 6 male and female.
Gen 2:4 is the summation of Gen 1:2-2:3.
Gen 2: 4 These are the generations of the heavens and of the earth when they were created, in the day that the Lord God made the earth and the heavens,
Each day is called a "generation" in the sense that God generates something.
4 This is the account of the heavens and the earth when they were created, in the day that the Lord God made earth and heaven.
An historic account.