Hi, thanks for this very quick answer.
I am developing the website locally and thus have no link to share atm.
This demo is similar to what I am trying to achieve :
themes.muffingroup.com/be/showcase/
So when clicking on the magnifying lens, what it does here : open the lightbox on which you can zoom (good thing), and show pretty much nothing else.
It does exactly the same thing when I switch it to ARI Fancy Lightbox in terms of functionality, since it considers the "featured image" as one image, and does not consider the gallery to its full (but maybe the Ajax tile organisation makes it impossible, I have no idea !)
What would be perfect : Clicking on the magnifying opens the gallery on the image that was clicked on. Then we can navigate between images AND also be able to go the article description that we normally access by clicking on the link icon or on the title.
Not sure if it is clear enough. Would screenshots be a solution to make myself clearer ?