A Toshiba Fire TV, the Fire TV stick and a Fire 4K TV box plus an Echo and Echo dot. I have yet to have an issue.
But if I did I'd go to the unit that is picking up the wrong remote and tell it to forget remotes. Here's an Amazon article on that.
I think it's in the "elect Settings > Controllers and Bluetooth Devices" area so unpair that remote.
https://www.amazon.com/gp/help/customer/display.html/ref=aw?ie=UTF8&nodeId=201740060
Fire remotes in bedroom changes the living room tv and i cannot get it to function with the bedroom tv. Only happened after we disconnected the cable tv, but we kept Wi-Fi in entire home.we now have five televisions 3 of which have Amazon fire stick attached to them. LR, BE & Downstairs office. I need the bedroom and Livingroom to function independent of each other. Can anyone offer up information on how to program the remotes to appropriate tv so there's no interference.

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