[EricH]

Originally Posted by lemon1324

Ah ok--that permits joinery between segments. Our team is more interested in where exactly the join may extend. In short, is it okay for the join to be in "Zone 2" in the attached sketch?

Thanks

That is what is unclear. From the sound of the Q&A answer, yes, if you protect it with a pool noodle.
However, <R08> makes me a liar. See Figure 8-2 and <R08> bullet 11, which reads "Hard bumper parts MUST NOT extend into the corners."

Translation, you may not be in that zone.