Get to grips but in friendly fashion (5,5)

I believe the answer is:

shake hands

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'get' is the definition.
The answer and definition can be both to do with communicating as well as being verbs in their base form.
Perhaps you can see an association between them that I can't see?

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for shake hands that I've seen before include "Finalise agreement" , "Greet" .)

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

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