Complaint from a bishop during awkward chat (7)
I believe the answer is:
Here is my best explanation:
'complaint' is the definition.
'a bishop during awkward chat' is the wordplay.
'bishop' becomes 'rr' (abbreviation for Right Reverend).
'during' is an insertion indicator.
'awkward' indicates anagramming the letters.
'chat' is an anagram of 'cath'.
'arr' placed into 'cath' is 'CATARRH'.
'from' is the link.
(Other definitions for catarrh that I've seen before include "Nasal discharge of mucus", "Cold in the head", "Problem with cold", "Arch rat with inflamed mucous membrane", "(Inflammation causing) excessive mucus", "Nasal problem", "Arch rat with inflammation of mucous membrane", "Nasal congestion", "Inflammation of membrane of nose and throat" and "Nasal build-up".)