Bar menu not initially ruined - works at possibly dodgy suggestions (10)

'possibly dodgy suggestions' is the definition.
The answer and definition can be both related to communication as well as being plural nouns.
Maybe they are linked in a way I don't understand?

'bar menu not initially ruined works' is the wordplay.
'bar' becomes 'inn' (both can mean a drinking establishment).
'not initially' means to remove the first letter.
'ruined' is an anagram indicator.
'works' becomes 'does' (I can't explain this - if you can you should give a lot more credence to this answer).
'menu' with its initial letter taken off is 'enu'.
'enu' is an anagram of 'uen'.
'inn'+'uen'+'does'='INNUENDOES'

'at' is the link.

Can you help me to learn more?