While I am not necessarily saying I endorse or disagree with this, Mebaqquer2 actually is describing what is found in practically all mainstream Bibles, namely what scholars call "The Six-Day Structure."
It is a motif or a design that one can compare to the setting up of a stage and is describes not only in The New Oxford Bible, but actually outside of study Bibles, such as in the very footnotes of the NABRE translation in chapter 1 of Genesis. It is also in the SBL Study Bible and its previous version, The Harper Collins Study Bible and just about any Bible you can find that has footnotes.
It is a symmetrical pattern that is hard to deny that goes like this wherein God sets up a series of "stages" for "players" when creating the "universe" as the Jews understood it:
The "stages" are:
DAY 1: Light and Darkness
DAY 2: Water
DAY 3: Land and Vegetation
Onto the "stages" God introduced the following "players" that are:
LIGHT & DARKNESS: sun and moon (day 4)
WATER: Fish & Birds that Fly over the waters under the sky (day 5)
LAND & VEGETATION: Animals & Human Beings
That is all that the scholars and academics have noted.
The Sabbath is set aside as it is based on already existing liturgy which was indepent from the Torah and inspired it (and vice versa). Chapter 2:1-4 is actually a prayer in the Jewish Siddur known as the Kiddush said on Friday evening after sundown when the cup of wine is blessed. The idea is that there is no stage because there is no "work" to be done at this point, only joy in welcoming the Sabbath. God performs mitzvot (good works) on each day and in each stage of the 6 days, but none of the 7th. Jewish liturgy and tradition as well as Scripture characterizes God as following his own laws, obediently observing the Sabbath, even though God is not under the Mosaic Law. It's an anthropomorphic illustration, applying human characteristics to God that do not actually exist in this case to make the argument that Jews are obliged to observe a weekly Sabbath rest.
After this follows what is generally believed to be an older creation mythology, Gan Eden, with a different cosmological makeup, and where obligation to the Torah seemed to be shifted to the humans instead of God. Instead of the Kiddush, a prayer, this mythology ends with God pronouncing curses that announce death. The motif seems to be The Temple and the Promised Land and its loss as Adam and Eve are forced to live "east of Eden" (aka, Babylon) where a "cherub" with a "sword" guards any chance of re-entry (cherubim marked the gates to Babylon and armed guards stood beside them). This myth foreshadows the ending of the Torah where Moses is left east of the Promised Land and dies without any chance of entry due to his sin.
So in the context, they see a significant pattern in the writing that differs greatly from the Gan Eden myth which is more of a narrative. Some have suggested that Genesis 1-2:4 is a mnemonic, an actual law to remember to observe the Sabbath, ending in the Kiddush.