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Wins favour and gets the picture (7,2)

Ross

I believe the answer is:

catches on

I'm a little stuck... Click here to teach me more about this clue!

This could be a double definition.

'wins favour' is the first definition.
Although both the answer and definition are verbs in their -s form, I can't see how they can define each other.

'gets the picture' is the second definition.
(catching on is a kind of getting the picture)

'and' acts as a link.

Can you help me to learn more?

(Other definitions for catches on that I've seen before include "Safe way to carry firearms" , "becomes popular" .)

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