Yeah - I think anything the UI is doing, it's getting the info from the API, so the poster would've had to use the 'cross-post' feature. There are some apps (e.g. Voyager) that try to wrangle cross-posts by title or URL, but title-matching can give false postives, and URL-matching usually assumes that one link hasn't picked up some cruft, and it can't do much for uploaded images if the poster didn't cross-post (because it'll be 2 different files with different URLs)