What does PubSub's trip look like?

So I am wondering what exactly PubSubs Trip looks like. Lets say I insert a Document on the client and the client validation passes so it should then move on to the server where the server validation then passes does the document then update all connected users or does it need to make the round trip to the database and only once the oplog reflects the changes does it then update all connected clients?

Take a look at lai:ddp-inspector – it’s quite revealing.

meteor add lai:ddp-inspector