Blunt language of slogan upset nervous conductor (5-5)
I believe the answer is:
anglo-saxon
'blunt language' is the definition.
'anglo saxon' can be an answer for 'language' (I have seen 'Earthy language' mean 'anglo saxon' so perhaps 'language' could also mean 'anglo saxon'). I am not certain of the 'blunt' bit.
'slogan upset nervous conductor' is the wordplay.
I cannot really understand how this works, but
an anagram of 'slogan' is 'anglos' which is present in the answer.
'conductor' could be 'axon' (I have seen 'impulsive conductor' mean 'axon' so perhaps 'conductor' could also mean 'axon') and 'axon' is located in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'of' acts as a link.
Can you help me to learn more?
(Other definitions for anglo-saxon that I've seen before include "Early British settler" , "old language" , "British settler from the 5th century" .)