Last bit of writing, following conversation (9)
I believe the answer is:
afterword
'last bit of' is the definition.
The definition suggests a singular noun which matches the answer.
'following conversation' is the wordplay.
'following' becomes 'after' (following can mean after or as a result of).
'conversation' becomes 'word' (as in having a word with someone).
'after'+'word'='AFTERWORD'
'writing' acts as a link.
Can you help me to learn more?
(Other definitions for afterword that I've seen before include "Final addition to book" , "Concluding part of book" , "Epilogue" , "I finish work" , "book end" .)