I usually do the same route in which, approximately halfway along the route, there is a point of traffic congestion and this is where Waze is useful for me to find an alternative to that point. I would like to be able to select only a part of the journey to receive the directions and be able to avoid them for the rest of the journey as I don't need them. I use Waze on the phone connected by bluetooth to the car and I can't manipulate it to silence it.
I hope I explained myself well