Create a Bundle module that appears just below the Add to cart button on the product page.
Its goal is to encourage the joint purchase of:
When both items are added in a single step, the customer receives a 10 % discount on each one.
The discount must not be applied if the products are added separately from their respective product pages.
At checkout, a confirmation banner should appear only if:
A wireframe is attached for reference; the final design should follow the current theme guidelines.