{HEAD ~ The node controller} receives transactions from a master device, communicates with {TAIL ~ a master device} as another master device or as a slave device, and queues transactions received from a master device 
communicates with
{ HEAD ~ The node controller } receives transactions from a master device , communicates with { TAIL ~ a master device } as another master device or as a slave device , and queues transactions received from a master device
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH