Crossword Genius

Concluded it's to do with (4)

Ross

I believe the answer is:

over

I believe this clue is a double definition.

'concluded' is the first definition.
(synonyms)

'to do with' is the second definition.
(both can mean relating to or as a result of)

'it's' is the link.

(Other definitions for over that I've seen before include "In the sky?" , "Unit of test" , "Action far more drastic than necessary" , "Completely ended" , "Finished, concluded" .)

I've seen this clue in the Evening Standard.
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