Make progress in friendly relations (3,2)

I believe the answer is:

get on

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This clue might be a double definition.

'make' is the first definition.
(thesaurus)

'progress in friendly relations' is the second definition.
'get on' can be an answer for 'progress' (thesaurus). I am unsure of the 'in friendly relations' bit.

Can you help me to learn more?

(Other definitions for get on that I've seen before include "Agree - embark - make progress" , "Board - prosper" , "Proceed; prosper" , "Board vehicle or make progress" , "Board (a bus)" .)

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

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