Discussion, chat (6)
I believe the answer is:
confab
This clue is a double definition.
'discussion' is the first definition.
(I have seen 'Informal discussion ' mean 'confab' so perhaps 'discussion' could also mean 'confab')
'chat' is the second definition.
(I know that chat can be written as confab)
(Other definitions for confab that I've seen before include "Chatter" , "Exchange" , "casual conversation" , "Chat (colloquial)" , "Talk informally" .)