Possible duplicate film (Al Reinert's "Audobon")
I was looking at the filmography of Al Reinert (https://www.imdb.com/name/nm0718031/), who died in 2018. I noticed that he still has a 2014 documentary titled Rara Avis: John James Audubon and the Birds of America tagged as (completed) without having been released. On the other hand, he also had a 2017 documentary titled Audobon which was released.
Both of these documentaries are about the same person, the painter/ornithologist John James Audobon. Is there any reason to believe that they are really two different films, one of which was released and the other one not? If they were two different films, that would imply that Reinert made a documentary about Audobon but failed to have it released, and then made as his next film another documentary about Audobon which did get released.
I know how to submit a merge for two films which are the same, but I would like to get an opinion from the staff or someone more familiar with either of these films as to whether they really are different films or the same.