Iran’s ancient horses had their own cemetery

That is true Maju, as we can see the transformation in Egypt, Seth being lower Egypts patron God, upon conquest of lower over upper, Seth became like the devil, or bad God. Then we can see this word being transmitted to Judaism from Seth to Satan or Shatan. So demons could come from Daemon from Persian Div.

We can also see the transformation of the word God, from Persian Khoda, into Kurdish Qoda, and eastern Europe, and old German Goda.... Adopted by the Catholic Church and transformed from Persian Khoda into our now God. And in Dutch it is God, old Dutch Goda, in Dutch the G has the sound like German CH, Arabic and Persian KH.

We can make those roots as well, but it does not make Christians Zoroasterians, or make the spilt of adoptation of this word because Persians conquored or there was a split. It shows tranformation of ideas.

Because the Indians sacrificed Horses, does not mean early Iranians did, expecially when they are considered very high, I even found out in Ancient and old Iran dogs were breed and loved just as much.

So it would be like asking an English person or dog lover to kill a dog as a sacrifice.

I still make no connection as you did sorry.