Monster sadly has no time for reading (6)
I believe the answer is:
sermon
'reading' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe you can see a link between them that I can't see?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for sermon that I've seen before include "minister's speech" , "Moral lecture" , "Vicar's talk" , "Lesson or religious talk" , "reading in church" .)