And yet, if you just drop your images, especially your edited images, onto a USB drive in a single folder, your TV likely can read and display those images in a default slideshow based on multiple criteria, including filename and / or date.
As said in another comment, recreating a square and calling it a wheel is really nothing to do with nothing relevant. No wonder the experts at Canon laughed at you. Submit your paper to the Ig Nobel Jury and see if they see things differently.
Why go thru the trouble of buying USB drives? Just leave the cable in the TV and connect it to the camera whenever you like. If you already have the drives, and utilize them in this way, then I can understand your doing it like that. I don't have any USB drives, or care to.