Or possibly using the section-rendering api to get vendor filtered collection pages.
See the dawn theme reference for implementation of product grids or product recommendation sections.
Beyond that it’s an advanced theme customization to create such a feature.
If you need this advanced theme customization then contact me for services
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ALWAYS please provide context, examples: store url, theme name, post url(s) , or any further detail in ALL correspondence.
I don’t think it’s very complicated. When creating a collection on product pages, if we make the meta link correctly, the other products of that seller will automatically appear on the same page.
I give an example. It’s like viewing a Nike brand shoe and seeing other Nike products on the product page. It’s like seeing Adidas products while examining Adidas products.
So actually this can be done very quickly and easily, with a meta link to a collection that will be added to the product pages when customizing the theme. But I don’t know how to set up that meta link.