Fonts, SSL and the waterfall

Web Performance
1

Hi,

Looking at this test https://www.webpagetest.org/video/compare.php?tests=221012_AiDc8M_ASV-r:1-c:0 I see some DNS/Connect/SSL for different hosts / domains, this part is as expected.

Looking into request #2 (a Woff2 file on the host prod-eet-clientresources.azureedge.net) and request #9 (a css file on host prod-eet-clientresources.azureedge.net). I wonder why Request #2 and Request #9 both have Connect and SSL but #9 does not have DNS lookup. Why is the Connection and SSL happening twice on the same host?

2

The font request, when not on the same origin as the main document, uses a “non-credentialed” connection separate from other requests so 2 connections are needed for the prod-eet… origin (though DNS can be reused).

3

So it is a special handling of fonts? Anywhere I can read more about this? Thanks