Which TES Oblivion DLC they refer to?

In this article they say that this dead horse on the cliff where you find a piece of horse armor is a reference to the Oblivion DLC. But which one? I remember there was a DLC for horse armor, but then I would just have bought it at stables, not found on a cliff…

the One on the cliff is the only horse head armor in the game and only in a PC mod called[horse armor] is a body armor.
The cliff one is an Easter egg. Left over from beta or not I can’t say.

Yes, I understand. But this easter egg is a reference to what?

Perhaps horse armor - Oblivion and huge nest - W3

???

Elder Scrolls IV Oblivion – Where to find Kingdom Come Deliverance’s horse armour
Equipped to the horse in the giant nest, you can find a cheeky reference to Bethesda’s notorious fumbling of paid DLC for Oblivion.

Why they referencing that shit game. Lol

Just like it says it refers to the horse armor dlc in Tes Oblivion

Yes, but what’s the connection between it and that horse being on a cliff in a nest?

Nothing. The joke is about the armor. Tes oblivion had armor for a horse wich you had to pay for. This turned into a joke that found its way into kcd.