Change of heart in strike, leading to working together (9)
I believe the answer is:
collusion
'change of heart' is the definition.
The definition and answer can be both related to thinking as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'strike leading to working together' is the wordplay.
I cannot quite see how this works, but
'working' could be 'on' (e.g. a machine is working or on) and 'on' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Other definitions for collusion that I've seen before include "Complicity between people for deceitful purpose" , "Connivance" , "Secret or illegal conspiracy to deceive" , "Illegal co-operation for criminal purposes" , "Secret deception" .)