High speed data bus for communicating between wireless interface devices of a host device

A circuit comprises:

• a first wireless interface circuit that communicates packetized data to a first external device in accordance with a first wireless communication protocol;
• a second wireless interface circuit that communicates packetized data to a second external device in accordance with a second wireless communication protocol;
• and
• a plurality of signal lines, coupled to the first wireless interface circuit and the second wireless interface circuit, that communicate at least four lines of cooperation data between the first wireless interface circuit and the second wireless interface circuit, wherein the cooperation data relates to cooperate transceiving in a common frequency spectrum.