Interesting point. This will be dependent on the site receiving significant traffic will it not? If the CDN node you go through doesn't have an open connection

Interesting point. This will be dependent on the site receiving significant traffic will it not? If the CDN node you go through doesn't have an open connection it will be slower. If that CDN node isn't getting new traffic it's going to close it. It's only going to hold that connection for a reasonable length of time.