after having read genesis in several versions all the way through i'm of the opinion that the timeline is not correct, and that actually Noah was around about 13000 years ago, and that there is many holes in the story because there literally isn't anything more than about 3000 years old that has been found related to the texts of the catholic canonical bible selection
Discussion
also, once you've read Enoch you understand that in the time of Jesus this was a widely studied text and many of his most famous sayings are actually from Enoch
the angels liked him so much they let him go and live with them
very likely the many threads that trace back from most of the good things recorded in text in the last 5000 years came from his teaching work, and not just in europe and middle east but the whole world, according to Jasher
I find Harold Camping's biblical chronology the most thoroughly researched and credible.
https://may-212011.com/downloads/TimeHasAnEnd.pdf
I know many dismiss Camping because of his failed predictions of the end of the age, but I believe he was an honest scholar who truly strove to uncover and live by the truth of scripture.