Waze should play sounds through the phone speakers when connected to CarPlay and when this setting is set in the Waze options. Situation right now is, that this option get fully ignored. This is bad when the phone outputs to a different audio device e.g. through bluetooth and the CarPlay sounds are muted. You have no change to get any audio from Waze in this situation. Please fix or at least also support output to different bluetooth device while connected to CarPlay.