Unfortunately, the review widget must be tied to a specific product or it will not be able to display reviews.
In this case, I would suggest using our review carousel though that you can feature 5-star reviews or you can choose which.
I can help to install Review Carousel on collection pages for you if you agree :)
Feel free to contact us if you have any questions or need further assistance.
Quynh Nguyen
Is it possible to have product specific reviews available on collection pages for those brands?
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