Question about Delock HDMI and SCART to

I use this <Scart to HDMI> converter for my old VHS recorder. That means: the recorder is connected to the SCART interface and the front HDMI plug (= output) to the TV. As expected, it works perfectly. The picture of the Scart interface is not only enlarged, but somehow extrapolated to the higher resolution.
Here is a short excerpt from the operating instructions:
The converter converts an analogue SCART video and audio signal into a digital HDMI signal.....
...There is also an HDMI input so that the converter can be used as a switcher.....
...The audio signal is simultaneously available at the HDMI output as a digital S/PDIF signal and as an analogue stereo signal at the jack socket.

So maybe this "jack socket sound" could be routed to a SCART interface. By means of a cable (one side jack plug other side RCA plug and this then into a SCART plug) it could possibly work. Just an idea. No guarantee that it will really work. No Risk - No Fun - No warranty.