The second receiving unit displays the content on {HEAD ~ a display} associated with {TAIL ~ the second receiving unit} 
The second receiving unit displays the content on { HEAD ~ a display } associated with { TAIL ~ the second receiving unit }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL