title: how to tell if a stream has one pipeline or more?
body: <p>Can we say stream concat uses one stream pipeline? for example this code</p>
  <pre class="lang-java prettyprint-override"><code>Stream.concat(
      l.stream()
          .filter(x -&gt; x.getCompanyState().startsWith(&quot;D&quot;))
          .sorted(Comparator.comparing(Company::getCompanyState)),
      l.stream()
          .filter(x -&gt; !x.getCompanyState().startsWith(&quot;D&quot;))
  ).forEach(System.out::println);
  
  </code></pre>