address review comments

index.bs

@@ -465,7 +465,7 @@ To <dfn>pullDatagrams</dfn>, given a {{WebTransport}} object |transport|, run th
     1. Set |chunk| to |view|.
 1. Otherwise:
   1. Set |offset| to 0.
-  1. Set |maxBytes| to an [=implementation-defined=] size.
+  1. Set |maxBytes| to the size of |bytes|.
   1. Set |buffer| be a [=new=] {{ArrayBuffer}} with |maxBytes| size. If allocating the
      {{ArrayBuffer}} fails, return [=a promise rejected with=] a {{RangeError}}.
   1. Set |chunk| to a new {{Uint8Array}} object with |buffer| and |offset|.
@@ -748,6 +748,7 @@ agent MUST run the following steps:
 Note: Using 64kB buffers with datagrams is recommended because the effective
 maximum WebTransport datagram frame size has an upper bound of the QUIC maximum datagram frame size
 which is recommended to be 64kB (See [[!QUIC-DATAGRAM]] [Section 3](https://datatracker.ietf.org/doc/html/rfc9221#section-3)).
+This will ensure the stream is not errored due to a datagram being larger than the buffer.
 
 1. [=ReadableStream/Set up with byte reading support=] |incomingDatagrams| with
    [=ReadableStream/set up with byte reading support/pullAlgorithm=] set to