Q.Mock Orange / Beauty Bush
I have a beauty bush my mother planted over 50 years ago. I don’t remember when but for quite awhile I also have a mock orange, which was never planted, intertwined with the beauty bush. It’s been this way for years and they both bloom. But I love the beauty bush and I want to know if one will ultimately harm the other.

Certified GKH Gardening Expert
I think that, ultimately, one will win out over the other. Probably, the younger specimen will out-compete the older at some point.
If you choose to keep one or the other, remove the one you intend to destroy very carefully.
This article will offer information:
https://www.gardeningknowhow.com/ornamental/trees/tgen/weed-trees.htm