Is seeking supported for m3u8 streams?

I am trying to go back in playback time on a m3u8 stream, this one in particular.

In VLC I can go back up to 2 hours in playback time, but I don’t find how to do it with Mopidy. I have tried through Mobile and Iris front ends as well as through home assistant interface (which uses MPD I think)

I tried sending playback.seek commands while playing a webradio, but these just return False - i.e. seek was not successful (so using a different frontend will likely not help).

Seeking a stream would rely on gstreamer being able to do so - based on this answer , it sounds like it’s not really supported (from what I understand, the stream would first need to regularly send EOS events - but then it’s not event clear how far back in time would be possible anyway).