Same trial endlessly corresponds (7)

I believe the answer is:

equates

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'corresponds' is the definition.
('equate' can be a synonym of 'correspond')

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for equates that I've seen before include "Regards as identical" , "Considers to be equal or equivalent" , "Corresponds, matches" .)

I've seen this clue in The Daily Express.

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