Suggestively, Brussels drug-dealer quietly replacing Conservative in charge with friend (15)

'suggestively' is the definition.
Both the answer and definition are adverbs. Perhaps there's a link between them I don't understand?

'brussels drug-dealer quietly replacing conservative in charge with friend' is the wordplay.
I cannot really see how this works, but
'brussels' could be 'eu' (European Parliament is based in Brussels) and 'eu' is found within the answer.
'drug' could be 'h' (H is an example) and 'h' is located in the answer.
'quietly' could be 'p' (musical symbol) and 'p' is found within the answer.
'conservative' could be 'c' (UK political abbreviation) and 'c' is located in the answer.
'friend' could be 'ally' (an ally is a friend or supporter) and 'ally' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?