When a host as a source of a print request received next after a print request from a currently connected host is the same as the currently connected host, print data is received from the currently connected host, and then print data corresponding to the next print request is received from {TAIL ~ the currently connected host} without disconnecting from {HEAD ~ the currently connected host} 
When a host as a source of a print request received next after a print request from a currently connected host is the same as the currently connected host , print data is received from the currently connected host , and then print data corresponding to the next print request is received from { TAIL ~ the currently connected host } without disconnecting from { HEAD ~ the currently connected host }
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