X15 remote

I recently had to replace my satellite STB (Model "FM"; the paperback book sized one) because pause and rewind quit working (message about a memory card missing, so I figure a chip just went bad). Anyway, I got a new X15 remote with it. It's easy to program to my TV (a TCL/Roku) and receiver (Samsung), but the power button will only turn off one or the other (TV or receiver), no matter what I try. I tried factory reset of the remote, then manually programming the codes for my TV and receiver as opposed to following the on-screen prompts, which a previous thread indicated worked for people (re: https://forums.xfinity.com/conversations/x1/xfinity-remote-wont-pair-both-tv-and-receiver/60c58a6e6c59237a14d64b38, and scroll down quite a ways to mrmattatl's posting). No difference: either TV or receiver is controlled by the power button, never both. The old X1 remote had two power buttons, the X15 only has one. I have paired an old X1 to my new STB, but that seems like a poor solution.

Is there any way to make an X15 remote turn on/off BOTH TV and receiver with the one power button?