one more clarifying sentence before the generator examples

Author: adqm

peps/pep-0798.rst

@@ -955,7 +955,9 @@ Advanced Generator Protocol Differences
 
 The differences become apparent when using the advanced generator protocol
 methods ``.send()``, ``.throw()``, and ``.close()``, and when the sub-iterables
-are themselves generators rather than simple sequences.
+are themselves generators rather than simple sequences.  In these cases, the
+``yield from`` version results in the associated signal reaching the
+subgenerator, but the version with the explicit loop does not.
 
 Delegation with ``.send()``
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^