I have a Toshiba Fire tv edition. I have my cable box plugged into HDMI 1. It only allows to scan channels on the antenna. I can not get it to give me an options to scan channels on HDMI. I can watch cable on HDMI, but Alexa doesn’t recognize any channel I request.
Unless the cable box has Alexa compatibility you won’t be able to control those channels. The box is what does the scanning, not the tv, especially when connected with hdmi.
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