A:Answer Yes, but it has issues. You can't say "Alexa, turn on TV". You must say "Alexa, turn on Fire TV". If you want it to turn on to HDM1 you have to give it 2 Alexa commands. - "Alexa, turn on Fire TV" then "Alexa, switch to HDMI1" I don't think any Alexa commands can be use with Xfinity cable box. EX "Alexa, show me the cable guide" I could be wrong but maybe someone else can share. I can do some Xfinity TV commands with my Sammy QLED and Fire Cube box.