Well... they aren't inseparable. There are times when you would
only listen and not speak, and there are times, albeit few, where
you might speak and not listen... and it wo…uld be absolutely
appropriate to separate the two during those times.
A President, giving a speech, focuses all of his attention on the
speech... at that time, he will not be listening to anything else,
but focusing completely on his speech... one way communication,
from him to his audience.
A student in a large freshman class listens to a lecture... takes
notes, tries to gather all the information possible. May not be
able or permitted to ask questions until later, during lab. (Those
lecture sessions have hundreds of people and it just isn't
feasible.) Gathering that information and just listening is the
appropriate thing to do in that situation.
However, most of the time in interpersonal communication, listening
is coupled with speaking. Understanding another person and being
understood in return is valuable... and one-way communication
Disclosing your innermost self without the other person disclosing
anything in return can cause you to retreat... trust needs to be
shared, or it is hard to have it at all. Risk is part of love, but
a shared relationship requires a shared risk... a shared