It has a driving connection (6)
I believe the answer is:
clutch
This clue might be a double definition.
'it' is the first definition.
The definition suggests a singular noun which matches the answer.
'a driving connection' is the second definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'has' is the link.
Can you help me to learn more?
(Other definitions for clutch that I've seen before include "Hold tight to the eggs" , "Grasp the brood of chickens" , "Grasp - eggs - car pedal" , "Grasp; group of eggs" , "Grip part of the car-engine" .)