Granted a measure to identical twins (7)
I believe the answer is:
acceded
'granted' is the definition.
The definition and answer can be both to do with communicating as well as being past participle verbs.
Maybe you can see an association between them that I don't see?
'a measure to identical twins' is the wordplay.
'measure' becomes 'cc' (cc is a kind of measure).
'to identical twins' becomes 'eded' (I can't explain this - if you can you should give a lot more credence to this answer).
'a'+'cc'+'eded'='ACCEDED'
Can you help me to learn more?
(Other definitions for acceded that I've seen before include "Yielded to another's wishes" , "Consented to" , "Assented" , "Agreed to demand" , "'Agreed, acquiesced (7)'" .)