A packaging assembly and a method of operating such a packaging assembly, the packaging assembly comprises at least one of a thermoform packaging machine, a separation robot, a conveyor and a checkweigher. The separation robot is operable to adjust a distance between packages of a group of packages formed by the packaging machine. The conveyor and the separation robot may be operated together to provide a flow of packages that is supplied to the checkweigher, wherein the flow of packages may include substantially constant distances between the individual packages.