In a recent episode, @MacSparky talked about a keyboard shortcut conflict he’d encountered. Thankfully David was able to figure it out on his own but, for the next time, there’s this free app. Check out Irradiated Software’s free Shortcut Detective:
https://www.irradiatedsoftware.com/labs/
https://www.irradiatedsoftware.com/labs/images/ShortcutDetective.png
App tip courtesy of Pete31 over on the DEVONtechnologies forum.