Union leader quietly taken out and briefed (7)
I believe the answer is:
updated
'briefed' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Maybe you can see an association between them that I can't see?
'union leader quietly taken out' is the wordplay.
'leader' says to take the initial letters.
'quietly' becomes 'p' (musical symbol).
'taken out' becomes 'dated' (I've seen this in other clues).
The initial letter of 'union' is 'u'.
'u'+'p'+'dated'='UPDATED'
'and' is the link.
Can you help me to learn more?
(Other definitions for updated that I've seen before include "Made something more modern" , "Modernised" , "revised" , "Dude apt to be made current" , "Brought to current level of completeness" .)