This connector worked as-intended, including eliminating any “chopping” inference frequently reported when using Peltor Comtacs with DMR radios.
Unfortunately, introducing the DISCUS Bluetooth adapter into the connection chain between the radio lead and Peltor re-introduces the interference. This tells me they tested the radio lead with DMR, but not the radio lead and DISCUS adapter together with DMR.
The lesson: Don’t plan to use the DISCUS if you plan to use this lead with DMR.
Beyond this...