Sam seeks endnote; found but appears incomprehensible (6,4,5)

I believe the answer is:

doesnt make sense

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'sam seeks endnote found but appears incomprehensible' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'sam seeks endnote found but appears incomprehensible' is the wordplay.
'sam seeks endnote' anagrams to 'DOESNT MAKE SENSE'.
However, I'm not sure how the anagram is indicated.

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I've seen this clue in the Sydney Morning Herald.

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