The top two bankers responsible for overseeing the cooperation between Credit Suisse's investment banking and wealth management operations in the US and Europe have left to join Deutsche Bank as it moves to replicate its Swiss rival’s cross-selling model.

Robert-Jan Kalff, who was responsible for coordinating cross-selling between Credit Suisse's European investment banking and wealth management businesses, will form a similar unit in Deutsche Bank's London office, designed to ensure closer ties between the two groups.