This formula produces some odd results. Look at these cases:

Upload Interp UpDoW IntDoW Days
5/24/2024 5/27/2024 Friday Monday 1
5/24/2024 5/27/2024 Friday Monday 1
1/12/2024 1/15/2024 Friday Monday 1
5/24/2024 5/27/2024 Friday Monday 1
11/8/2024 11/11/2024 Friday Monday 1
2/10/2023 2/13/2023 Friday Monday 2
8/11/2023 8/14/2023 Friday Monday 2
8/18/2023 8/21/2023 Friday Monday 2
9/22/2023 9/25/2023 Friday Monday 2

These are all cases where images are uploaded on a Friday and interpreted on a Monday.
This would be equivalent to interpreting on the same day or at worse, 1 day.
So we'd need to subtract the weekend. But why does it return a 2 for some?