Since your mind is whirling without facts, I guess the "meaning" can be anything you want. But the text does not draw attention to who has sex with who, and your effort to map out sex partners is thwarted.

I myself take Adam and Eve to be figurative or allegorical. The Bible has many Creation accounts and they don't draw attention to a single human woman giving birth all people.

In Psalm 104:30, on the day humans are created, “They are created.”

In Proverbs 8:31, the Wisdom who helps with Creation is found “delighting in its people.”

In Sirach 17:1–3: “He clothed them in a strength like himself, and in his image he made them.”