I would suggest not to choose randomly to avoid this issue altogether.
There probably is a way to rearrange the images with a different filter or styling.
If it needs to be random, you will most likely need some custom logic.
You could compare the item ID’s after fetching and sort duplicates out
Now you will be missing an img, how will you get an additional one?
You will end up fiddling with the CMS API, and it will not be fun
Thanks for the input. I was hoping for a simple solution.
I think my best option to have some control and get the random effect is to assign each logo with a number corresponding to a slide – and make it random within a slide.