Installing Doorbell Wired and Doorbell 4 together

I have 2 doorbells. Front and back. I have a Ring 4 and a Ring wired video doorbell 4 Model #B08JNR77QY Video doorbell wired #B08CKHPP52 Ring Chime Model #B09L45VFCN Quantity 2 I have an existing mechanical door chime Question 1. Do I have to install 2 jumpers on my existing mechanical chime. 1 from front > trans and 1 from rear to trans? Question 2. I want to bypass my existing chime and user the 2 Ring Chimes I've purchased. Does that mean I do not use the jumpers? Three calls to support. Nobody can answer this question.