Gets along as chap gets on (7)

I believe the answer is:

manages

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'gets along' is the definition.
The definition and answer can be both to do with social activities as well as being verbs in their -s form.
Perhaps they are linked in a way I don't understand?

'chap gets on' is the wordplay.
'chap' becomes 'man' (chap can mean a man).
'gets on' becomes 'ages' (get on can mean to get older).
'man'+'ages'='MANAGES'

'as' acts as a link.

Can you help me to learn more?

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

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