A second transistor couples {HEAD ~ at least one logic input} of the logic circuit to {TAIL ~ the input} of the amplifier 
to
A second transistor couples { HEAD ~ at least one logic input } of the logic circuit to { TAIL ~ the input } of the amplifier
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH