Welcome to Samsung's ridiculous decision making - changing features and settings without letting users know. I went for a walk the other day, tracking it with my Galaxy Watch 3 and out of nowhere my phone was reading out my distance travelled, speed etc every KM through my phone speaker. Previously this would come out of the watch speaker - I have not enabled this in any settings, looking through Samsung Health and the Wearable App on both the phone and watch I can't see any option to change where audio is routed. It's something Samsung need to really work on because it's so frustrating.