Connection leaking after getting ruptured (7)

I believe the answer is:

linkage

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'connection' is the definition.
(I know that linkage is a type of connection)

'leaking after getting ruptured' is the wordplay.
'leaking' anagrams to 'LINKAGE'.
But, I'm not sure how this is indicated.

Can you help me to learn more?

(Other definitions for linkage that I've seen before include "where the join is" , "Connection, bond" , "Connection, coupling" , "Leaking (anag)" , "Part of mechanism" .)

I've seen this clue in The Irish Times.

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