1. The problem is that extraction usually creates a couple of sub folders:

xyz.2019-xxx.r01
=> /xyz_xxx/xyz.2019-xxx/xyz_xxx.mkv

while the already extracted file is located in the root of the folder:
=> /xyz_xxx.mkv

So its not scipping because it does not get it.

2. that would be an option ...

So I'm currently facing the situation that I have the .rar files and the extracted .mkv file in one folder.
I can not change it, it is just that way.
What I would like is an option to say: if there is rar's and a (large / 700mb+?) .mkv file in the same folder, skip the extraction and take the mkv ...