Vedas were taught only to Brahmin males for most of history. And higher philosophy such as Advaita Vedanta were taught only to Brahmins.
There exist many Brahminical schools in India even today where you can gain admission only if you are born to a Brahmin family.
Buddhists paid no attention to caste, and after long interview and/or written tests, people from any caste could gain entrance to Buddhist higher education institutions.
And many Hindu kings, not only Guptas, nurtured and sponsored Buddhist higher ed. institutes and higher officials of their administrations almost always were exclusively gradutes of such institutions.
2. The Hindu-Buddhist schism is a recent one and partly enlarged due to political reasons. Buddhism was considered another atheist school within Sanatana Dharma.
https://amp.scroll.in/article/1058543/the-idea-that-buddhism...
What? The concept of Brahman predates Buddha by hundreds - thousands of years.
The Vedas are older than Buddha by 1-2 thousand years. Not sure what you mean here unless you are implying time travel.
Of course, I am going by standard scientific/historic dating and not relying on scriptures like you seem to do continuously through this thread.
1. Oldest Vedas: ~2000 BC
2. Latest Veda: ~900 BC
3. Buddha born: 563 BC
What do you mean?
https://www.history.com/topics/landmarks/angkor-wat#:~:text=....
> Originally dedicated to the Hindu god Vishnu, Angkor Wat became a Buddhist temple by the end of the 12th century.