I have a TCL Roku-55S451 TV and a XR15 - Voice remote that I have some remote issues with.

I have a TCL Roku-55S451 TV and a XR15 - Voice remote that I have some remote issues with.  I also have a Yamaha RX-V863 AVR. I want to control my tv and avr with the XR15, but it seems the remote will do either one but not both at the same time. The XR15 pairing process  starts with the tv and then pairs the avr, but the avr cancels out the TV pairing regardless of what codes are used.