With direct coupling, {TAIL ~ piggybacked adapter} receives {HEAD ~ network signals} and electrical from EPN connected first adapter through a shared medium port 
With direct coupling , { TAIL ~ piggybacked adapter } receives { HEAD ~ network signals } and electrical from EPN connected first adapter through a shared medium port
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH