A device having a first processing system for providing the functionality of the upper layers of a Bluetooth stack, including a first L2CAP layer, a Bluetooth Controller for providing the functionality of the lower layers of the Bluetooth stack, the first processing system and the Bluetooth Controller being connected by a Host Controller Interface (HCI), a second processing system including an implementation of a second L2CAP layer for transmission of data to the Bluetooth Controller for transmission over a Bluetooth Link established by the first processing system and L2CAP layer, and the first processing system being configured to distribute flow-control tokens between the first and second L2CAP layers both layers can transmit data to a remote device using the Bluetooth Link.