It’s a shadow… But I like the color and I know you are trying to match 2 different transfers as the same color.
All I am saying is, it is giving you a clue what that is meant to look like. And weather you want to pay any attention to small little things like that. It will give you more information about what the film is “Meant to look like”
weather the 35mm looks like that or not is another matter. All I am saying is it’s a clue. No problems with what you are doing, and I am far from an expert but that for me is a indicator.
It’s a key to a door.