Trumpet Vine Has A Long Bean Shape Growing On It Wondering What It Is?

Question

The bean shape is about 4 inches long and very hard

Answer 1

Sorry. I have to remove the image url. We have to try and stick with .edu sites when it comes to photos.

Answer 2

A seed pod? See this picture:

https://plants.ces.ncsu.edu/plants/campsis-radicans/