Melding arrangements that are combined (7)

I believe the answer is:

mingled

'are combined' is the definition.
(thesaurus)

'melding arrangements' is the wordplay.
'arrangements' indicates anagramming the letters (I've seen 'arrangement' mean this).
'melding' anagrammed gives 'MINGLED'.

'that' is the link.

(Another definition for mingled that I've seen is " Mixed together".)

I've seen this clue in The Mirror.

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