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

1.
mano a mano, en connivencia
working closely together, often in a way that is dishonest or secretive
:
•
The two politicians were working hand and glove on the controversial bill.
Los dos políticos trabajaban mano a mano en el controvertido proyecto de ley.
•
It was clear that the company and the regulator were hand and glove.
Estaba claro que la empresa y el regulador estaban en connivencia.