'These are the generations of' is a phrase which is repeated through out Genesis to assign different sections.
In Gen 2 it separates the two creation accounts.
This doesn't give any context, other than saying they are different accounts.
The problem, for me, occurs when people arbitrarily project into the different accounts things that they want to be there (like Gen 2 is a local creation, or a summary)
So I struggle to see, from the scriptures, how we understand the context to be different.