If yes, {TAIL ~ processing} continues at {HEAD ~ process block} 1140 where a connection is allowed 
If yes , { TAIL ~ processing } continues at { HEAD ~ process block } 1140 where a connection is allowed
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH