Was the Book of Daniel really written in the sixth century BC or was it a much later forgery from the Hellenistic Era?

This analysis is by Daniel Silliman ... the New International Version Study Bible has about 20,000 verse-by-verse notes, plus introductions to each book, overviews of sections of scripture ...

The film, vetted by pastors, theologians and biblical historians, covers Chapters 1–3 of the book of Daniel, and Kooman said the goal is to inspire viewers to dive into the Bible themselves.