from 3.5. HTTP/2 Connection Preface in HTTP/2 protocol

   That is, the connection preface starts with the string "PRI *
   HTTP/2.0rnrnSMrnrn").  This sequence MUST be followed by a
   SETTINGS frame (Section 6.5), which MAY be empty. 

In this context,  does it imply that the SETTINGS frame sent by the client following the connection preface should be its own SETTINGS frame rather than an acknowledgment (ACK) of the SETTINGS frame sent by the server?

or say whether MAGIC (the connection preface) can be followed by settings_ack?thanks!