Hi,
1. I mean details like :
* Would it be the real same product ?
* Two different products in the store but with the same name ?
* Vendor will have access to the edition of the product ?
* How do you want to make the difference between the two vendor's products ?
* How the customer will choose his vendor ?
2. When someone tell you something which is wrong and do not exist ; well, I prefer to know what has been told exactly to be sure that they didn't have any misunderstanding about the HikaMarket features.
I am sending customers to the website to the vendor URL as I was told this should assign the customer to that specific vendor.
There is no affiliation with vendors but there are system to assign vendor dynamically to a product depending the customer zone or depending a order/item custom field.
That order/item custom field can be pre-fill by a "preferred vendor" which can be stored in the user profile (using a custom field too).
With some custom development, it is possible to improve the "vendor assignation" system and make your own algorithms.
Like, it would be possible to not have any order/item custom field for the vendor selection but just base the selection on the user custom field. And you can also make that user custom field invisible but use a plugin to store the value from a cookie just after the user has registered.
A lot of things are possible with some development but we have to know what you want to do exactly in order to guide you in the right direction.
Regards,