It's not BMW only, the problem is with any Apple CarPlay on wireless connection, if you delete the CarPlay from your Bluetooth devices on your iPhone your Apple watch ring just fine - BTW this is IOS 14 problem it has been like that since they released IOS 14.0
I have no idea how no-one in Apple using wireless CarPlay and Apple watch hasn't noticed that problem, this is something that should've been fixed during the betas.
I hope Tim C. reads this.......
kurtevk
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