Headphone monitoring for 6D?

[jankyy]

Hi,

I'm trying to monitor my live audio recordings via the camera-USB with an A/V cable & headphones. Playback sound works. But when I plug in the USB cable while in recording mode the camera display goes dark, no sound coming through. Is that regular 6D camera behaviour? Or am I missing a setting?

I found something about a 'Tragic Lantern' branch, that seemed to have been doing the job. Has this part of the code been lost?
Also I found this: https://www.linkedin.com/pulse/random-geekery-adding-headphone-monitoring-canon-6d-firmware-tempey

I'm not a coder. Any way this could be (or already is?) implemented into the actual MagicLantern?

Thanks very much - Jan