hand and glove
US /hænd ənd ɡlʌv/
UK /hænd ənd ɡlʌv/

1.
a stretto contatto, in combutta
working closely together, often in a way that is dishonest or secretive
:
•
The two politicians were working hand and glove on the controversial bill.
I due politici lavoravano a stretto contatto sul controverso disegno di legge.
•
It was clear that the company and the regulator were hand and glove.
Era chiaro che l'azienda e l'ente regolatore erano in combutta.