Hi Rose006, you're asking to have two separate product pages on the same page with multiple variant selectors. This can actually get quite complicated and is possible without an app but would need custom coding.
I don't know of any apps that are designed to do this but you'd be able to do it with some sort of bundle app: https://apps.shopify.com/search?q=bundles&st_source=
|2 hours ago|
|4 hours ago|
|5 hours ago|
|10 hours ago|