Will Galaxy S7 automatically connect to car if already connected to Gear S3?

[AC Question]

If my Galaxy S7 Edge phone is paired and connected the a Gear S3 watch, will the phone still automatically connect to my car or will I first have to turn off the watch's Bluetooth or manually force the car connection?

My guess is it won't and I want to check before getting the watch. I would not want to have to disable the watch's Bluetooth every time I got in the car.

Thanks,
Stan