Crossword Genius

Almighty corporation set up for chief exec, say? (3,3)

Ross

I believe the answer is:

top dog

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

'chief exec say?' is the definition.
I can't tell whether this defines the answer.

'almighty corporation set up' is the wordplay.
'almighty' becomes 'god' (synonyms).
'corporation' becomes 'pot' (corporation can humorously mean a pot belly).
'set up' says the letters should be written in reverse.
'god'+'pot'='godpot'
'godpot' back-to-front is 'TOP DOG'.

'for' is the link.

Can you help me to learn more?

(Other definitions for top dog that I've seen before include "Fat cat" , "Master or victor like superior canine" , "Thirteen [HONCO]" , "First" , "high in the sky?" .)

I've seen this clue in The Times.
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