Hints that union's disruption is about to finish (9)

'hints' is the definition.
The answer and definition can be both related to communication as well as being plural nouns.
Maybe you can see a link between them that I can't see?

'union's disruption is about to finish' is the wordplay.
I cannot quite see how this works, but
'finish' could be 'end' (synonyms) and 'end' is present in the answer.
an anagram of 'union' is 'innuo' which is located in the left over letters.
A single letter 's' remains which might be clued in a way I don't see.
This explanation may well be incorrect...

'that' is the link.

Can you help me to learn more?