Relation visiting Germany gets thinner (7)

I believe the answer is:
gaunter
'thinner' is the definition.
('gaunt' can be similar in meaning to 'thin')
'relation visiting germany' is the wordplay.
'relation' becomes 'aunt' (I've seen this before**).
'visiting' means one lot of letters goes inside another.
'germany' becomes 'ger' (I've seen this in other clues).
'aunt' inserted inside 'ger' is 'GAUNTER'.
'gets' acts as a link.
I've seen this clue in The Telegraph.
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