Importantly, he confuses Amy with Ken (3,3)
I believe the answer is:
key man
'importantly he' is the definition.
I know nothing about this answer so I can't tell whether this works.
'confuses amy with ken' is the wordplay.
'confuses' indicates an anagram.
'with' is a charade indicator (letters next to each other).
'amy' after 'ken' is 'kenamy'.
'kenamy' with letters rearranged gives 'KEY MAN'.
Can you help me to learn more?
I've seen this clue in the Evening Standard.
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