hand in glove
adverb
ukus(USalsohand and glove)if youworkhandinglovewith someone, youworktogether veryclosely:
Thegeneralmanagerat theScottishplant, willworkhandinglovewith UKmanagingdirectorin London.
Thelieutenantgovernorcanworkhandandglovewith the newadministrationto makesurethat therightbillsget putforward.