Vague idea linking differences (7)

I believe the answer is:

inkling

'vague idea' is the definition.
(I've seen this before)

'linking differences' is the wordplay.
'differences' indicates an anagram (I've seen 'difference' mean this).
'linking' anagrammed gives 'INKLING'.

(Other definitions for inkling that I've seen before include "Glimmering of notion" , "Clue" , "Faint notion" , "Vague suspicion" , "Vague notion" .)

I've seen this clue in The Globe and Mail.

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