I want to know the answer to the following question:
In pre-buddhist early Brahminic texts there is no evidence for what?
All the background I'm provided with is that "While there is no convincing evidence for meditation in pre-Buddhist early Brahminic texts, Wynne argues that formless meditation originated in the Brahminic or Shramanic tradition, based on strong parallels between Upanishadic cosmological statements and the meditative goals of the two teachers of the Buddha as recorded in the early Buddhist texts.". Is that enough to answer the question?
Answer: yes