How to bundle and discount items by collection, not product?

Shopify Discussion
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Use case : Buy 1 item from collection A and 1 item from collection B to get a discount.

I am looking for an app that discounts based on collections, not products. The only one that Ive found is by BOLD and it errors out when attempting to update the theme (and they do not have prompt support)

Is there another bundle app that can bundle by collection, not individual product?

Thank you very much