Bear in mind that’s not what was said. They said “one teaser promotion had young cable...” now I am pretty sure I haven’t seen this anywhere, but if it’s for an issue #1 cover already published then fair game. I was taking the reply on face value and had zero context and assumed it was promoting something in the future. If it was I think you can understand my request.
If this was something already published in comic form perhaps you could point to it.