Continuous railing? (5,2)

I believe the answer is:

going on

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'continuous railing?' is the definition.
The definition and answer can be both to do with communicating as well as being present participle verbs.
Maybe you can see an association between them that I don't see?

This is the entire clue.

Can you help me to learn more?

(Other definitions for going on that I've seen before include "Almost" , "Continuing" , "reluctant to stop?" .)

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

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