Ebay guarantee authenticity program

[BobC]

Maybe an odd question regarding this authentication process and looking at in in another perspective. We've all seen how over the years Ebay has cracked down on buyers and sellers being able to share personal contact info, as a way to possibly get around and work deals off Ebay. Of course, when a seller sends a buyer their item, some sellers include their business cards, direct contact info and such. Has anyone involved on either side of one of these Ebay sales that went through authentication received or sent any such contact info along with a card, and did the authenticators include that info when forwarding the card on to the buyer? Curious if Ebay may have instructed the authenticating company CSG or PSA to pull and discard any such contact info, kind of like how they disallow people including contact info when messaging through Ebay.