Watch the Video here 

https://youtu.be/76sgBHUl7iI

Alessandro Ghedini wrote an interesting article discussing how DNS queries can help speed up HTTPS and HTTP/3 communication let us discuss this article

https://blog.cloudflare.com/speeding-up-https-and-http-3-negotiation-with-dns/

3:30 TLS video https://www.youtube.com/watch?v=AlE5X1NlHgg

4:57 HSTS https://www.youtube.com/watch?v=kYhMnw4aJTw

8:15 http/2 c smuggling https://www.youtube.com/watch?v=B2VEQ3jFq6Q

15:30 ESNI https://www.youtube.com/watch?v=t0zlO5-NWFU