Crossword Genius

Too long ago too matter, yet Corinthians are intrigued (7,7)

Ross

I believe the answer is:

ancient history

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'too long ago too matter' is the definition.
The definition suggests a singular noun which matches the answer.

'yet corinthians are intrigued' is the wordplay.
'yet corinthians' can be anagrammed to 'ANCIENT HISTORY'.
Though, I am not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for ancient history that I've seen before include "something obtained from old documents?" , "The period of Greece and Rome" , "that happened long ago" , "There's something very familiar" , "accounts of Roman empire" .)

I've seen this clue in the Sydney Morning Herald.
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