Grundig soundbar with Google Chromecast remote = TCL soundbar setting

Totally offtopic, but in case someone ever googles for it:

A Grundig soundbar works with TCL remote settings (the third set, but just select TCL and follow the instructions on screen) on Google Chromecast!
Don’t ask me how I found out… (ok: I tried and tried till I was surprised when it suddenly worked!).

If you are helped with this info, please let me know with a comment!