Technically gutted firm connected with mogul (6)
I believe the answer is:
tycoon
'mogul' is the definition.
(both can mean a rich person)
'technically gutted firm connected' is the wordplay.
'gutted' says to hollow out the word (remove centre letters) (to gut something is to remove its insides).
'firm' becomes 'co' (a firm is a company).
'connected' becomes 'on' (synonyms).
'technically' with its middle taken out is 'ty'.
'ty'+'co'+'on'='TYCOON'
'with' is the link.
(Other definitions for tycoon that I've seen before include "See 2" , "Captain of industry" , "Entrepreneur" , "top businessman" , "Rich businessperson" .)