Dramatist newspaper chief came across (9)

I believe the answer is:

traversed

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'came across' is the definition.
(I've seen this before)

'dramatist newspaper chief' is the wordplay.
'dramatist' becomes 'travers' (Ben Travers).
'newspaper chief' becomes 'ed' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'travers'+'ed'='TRAVERSED'

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(Other definitions for traversed that I've seen before include "Travelled across zigzag course" , "Crossed" , "Came across" , "passed over" , "Went over" .)

I've seen this clue in The Telegraph.

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