Agreed. Basically all you need is: 1. Something to delimit the boundaries of the message. 2. Some way to determine the nonce. OTOH, the TLS 1.3 record layer i

Agreed. Basically all you need is: 1. Something to delimit the boundaries of the message. 2. Some way to determine the nonce. OTOH, the TLS 1.3 record layer is barely more than authenticated encryption,