Could you explain more? Is this just an experiment to see if you can line up and fuse 2 separately printed objects? Are the 2 parts different materials? I feel like I'm misunderstanding.
What I think you've done is print 1 object in TPU and then print a 2nd object, also in TPU, close enough to the 1st object such they fuse. Maybe your future plans would help me understand. I'm interested in learning about different techniques.
I had considered doing something like object fusing to create foldable objects, like print the first couple layers in TPU (for both objects as well as a connecting piece between them) and then print 2 separate objects on top of the TPU base -- think like a foldable phone case where rather than use a normal hinge, it would be an edge in TPU and the rest is PLA/PETG/whatever. Reason to do the whole base in TPU is that I thought just printing the part that connects the other 2 parts in TPU wouldn't fuse well enough and would separate with use. I've not actually done this.