> from the time the last bit of the playlist is returned to the last bit of the video segment Based on my loose understanding of HTTP/2 server push and ALHLS,

> from the time the last bit of the playlist is returned to the last bit of the video segment Based on my loose understanding of HTTP/2 server push and ALHLS, the sequence of events will be: 1. Client requests playlist for future media segment/"Part" 2. Server blocks (does not send response) until the segment is available 3. Server sends the playlist ("manifest") as the response body along with a push promise for the segment itself The push then begins with the segment. The push stream can presumably occur concurrently with the response body stream. So I don't think you can wait until every bit of the playlist comes in. Likewise, you can't use the playlist bits itself to gauge bandwidth because the server imposes latency by blocking.