Just finished this too - I really enjoyed it, and whilst it felt too long, that was clearly because I didn’t have an 8 year break in the middle like was originally in place.
Much like with Making a Murderer, I don’t think he did it, but I certainly don’t KNOW that he didn’t. So that made good TV for me. And some of the bants and laughs were odd, but so much time was passing, and we were seeing little snap shots of a family trying to move on from what they believe to be an accident, and in the midst of what they believed was a bizarre injustice.