"Image also seen on galleries" - how long does it take

[raylwatts]

I have uploaded tons of photos that are already on the site in other galleries (I uploaded them as part of complete sets). None of my photos have any galleries listed underneath, e.g. an "image also seen on galleries" section. How long does it take the site to make those connections with new uploads?

[SharpshooterSouthern]

This Feature broke per my understanding and new content wont be calculated into it. Only the old stuff remains.