Problem: [Belkin Thunderbolt Dock] + [Siri on MacOS] = [No Siri Input]

Issue: Siri on MacOS cannot hear me when I have my Thunderbolt dock attached.

WITH Thunderbolt dock plugged in:

Siri doesn't respond; "she" doesn't show signs of "her" receiving audio input. Dictation works. The mic is responsive in Settings.

WITHOUT the Thunderbolt dock:

Siri does respond; "she" does show signs of "her" receiving audio input. Dictation works. The mic is responsive in Settings.

Any ideas? Anyone else in the same boat?

_________

Hardware:

- 2015 Macbook Pro Retina

+ MacOS Sierra (obviously)

[Connected using OEM Apple Thunderbolt wire]

- Belkin Thunderbolt 2 Express Dock

+ Ethernet Wire

+ USB 3 External HD

+ USB 3 USB Drive

+ HDMI 4K TV (rarely used; powered off during issue)

_________