Discussion, chat (6)
I believe the answer is:
confab
I believe this 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.
(synonyms)
(Other definitions for confab that I've seen before include "Chatter" , "Exchange" , "casual conversation" , "Chat (colloquial)" , "Talk informally" .)