'queue' was referring to chromecast's touted ability for, say, me to be able to send a video to the chromecast and then you to send one for it to play 'next'.

'queue' was referring to chromecast's touted ability for, say, me to be able to send a video to the chromecast and then you to send one for it to play 'next'. And 'download' was to make explicit the chromecast is downloading the content from the internet itself; it's not taking a videostream from the device as in the Airplay/"device-as-brains" scenario. I'm not sure there's any difference between the phrasings in your second paragraph. I certainly didn't intend to imply anything different.