Couple in conference, perhaps overheard (4)
I believe the answer is:
pair
'couple' is the definition.
('pair' can be a synonym of 'couple')
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for pair that I've seen before include "2" , "E.g. two aces; mate" , "Husband and wife" , "Twosome" , "flight of stairs" .)