Should You Use Similar Content In The GStacks As On The GSIte And The Money Site?

“In episode 277 of the weekly Hump Day Hangouts by Semantic Mastery, one viewer asked if one should use similar content in the Gstacks as on the Gsite and the money site.

The exact question was:

A question about (duplicate) content: Do I use the same content in the Gstacks as in the Gsite as on the money site? So if I iFrame the money site onto the Gsite the content appears twice? And there is no problem with that? Also because the Gsite takes the Schema from the iframed site it now has the Featured image of the iframed site in mobile search, even though that image does not appear anywhere on the Gsite. I though you might like to know that and if you already do you maybe know a way to undo this.”