show audio timecode - doesn't work

Hello!

I have a poly-wav audiofile and want to see the timecode.
With databurn-in audio timecode oder any other timecode it shows nothing.
The field is just empty. But the timecode is burned in.
In Avid it shows me the original source audio timecode.

When I take any videofile and put it on the videotrack davinci shows an audio TC but it is actually the TC of the video file.

So, how is it actually possible to show the timecode of audio? It's not because of the poly wav, it also doesn't work with a single wav file.

I, too, have this question.