this is not related but a link to full gallery. You should either keep it as link or convert it to slideshow. Because it's important content it shouldn't be in <related>
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https://instantview.telegram.org/checklist#6-3-2-related-articles-and-other-more-links
1. Keep but don’t format as Related
- Links that are part of essential content for the article (without which the article makes no sense).