Control device for coupling an antenna arrangement of a motor vehicle to at least one vehicle component of the motor vehicle for an exchange of messages with off-board objects (2, 3), including: - an antenna connection device for connecting the antenna arrangement, - a first radio module for providing a first radio link via the antenna arrangement to at least one of the objects on the basis of a first radio standard, - a network connection device for coupling the control device to the at least one vehicle component, - a second radio module for simultaneously providing a second radio link via the antenna arrangement to at least one other of the objects on the basis of a second radio standard differing from the first radio standard, - a processor device for receiving at least one of the messages via the first radio link and for receiving at least one other of the messages via the second radio link, and - a receiver device for receiving a time signal of a Global Navigation Satellite System (GNSS), characterised in that - the control device is configured to transmit some of the messages with time data, which are generated on the basis of the time signal; wherein - the processor device includes a synchronisation unit configured to determine respective time data (A, B, C, D) for each received message, wherein the time data are generated in the control device through detection of a respective time of receipt of each message, and to forward the received messages in a sequence determined by the time data (A, B, C, D) to the at least one vehicle component, and - the processor device is configured to provide a respective dedicated protocol stack (23, 24) for each radio module (16, 17). - an antenna connection device for connecting the antenna arrangement, - a first radio module for providing a first radio link via the antenna arrangement to at least one of the objects on the basis of a first radio standard, - a network connection device for coupling the control device to the at least one vehicle component, - a second radio module for simultaneously providing a second radio link via the antenna arrangement to at least one other of the objects on the basis of a second radio standard differing from the first radio standard, - a processor device for receiving at least one of the messages via the first radio link and for receiving at least one other of the messages via the second radio link, and - a receiver device for receiving a time signal of a Global Navigation Satellite System (GNSS), characterised in that - the control device is configured to transmit some of the messages with time data, which are generated on the basis of the time signal; wherein - the processor device includes a synchronisation unit configured to determine respective time data (A, B, C, D) for each received message, wherein the time data are generated in the control device through detection of a respective time of receipt of each message, and to forward the received messages in a sequence determined by the time data (A, B, C, D) to the at least one vehicle component, and - the processor device is configured to provide a respective dedicated protocol stack (23, 24) for each radio module (16, 17).