Well, not exactly a TV... it's a smartphone and Google, which listens to everything. I had a case where I was discussing Soviet orange first-aid kits with my colleagues, which contained a lot of prohibited items. We chatted and forgot about it, but the next day, YouTube recommended videos about the contents of these kits...
I think it's more likely that one of my colleagues actually Googled those first-aid kits. I've heard that there are cases where different people from the same subnet are offered similar recommendations.