Controlling a "Tab Title" on a "Product Page"

I did search but could not find any help on this. I would like to be able to customize the “tab title” on a product page which is different to the SEO title. I spoke to the wix help and they said it wasn’t possible unless it is something that can be coded. The reason for doing this is that in the wix chat section it shows what page the user is on but it uses the product tab title to describe it so they are always on “Product Page | Site Title”. Any help would be appreciated.