The div is literally named "ad", with several more occurrences of "ad" in the classes & id and the child div's class & id. It's as if the in-stream ads are intended to be trivially blocked. They are not obfuscated at all.
This suggests to me, that CBS is mandating these, and whoever actually handles the site coding maliciously complied.
I'm still not seeing them. Idk what you guys are talking about.