Just reported over-succeeding? (8,7)

I believe the answer is:

breaking through

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'just reported over-succeeding?' is the definition.
I can't judge whether this defines the answer.

'just reported over-succeeding?' is the wordplay.
'just reported' becomes 'breaking' (I can't justify this - if you can you should believe this answer much more).
'over' becomes 'through' (both can mean finished).
'succeeding?' means one lot of letters go next to another (succeeding can mean going after or following).
'breaking'+'through'='BREAKING THROUGH'

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

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