One thing to keep in mind with HTTP/2 server push is that a server can only send a push in response to a client request. This was the difference that I was

One thing to keep in mind with HTTP/2 server push is that a server can only send a push in response to a client request. This was the difference that I was not aware of, thanks. So HTTP/2 server push is just opportunistic, while WebSockets are real-time push with a persistent connection.