Daul audio output

Is it possible to route audio output to Alsa/IQaudio as well as HDMI on an RPi running OSMC? Normal Kodi options are HDMI, Analogue, HDMI+Analogue, or ALSA. If not, is the limitation in the software or RPi hardware?
I believe this came up a year or so back but can’t find the original thread sorry

Have you used the OSMC search? Because it only took me 1 minute to find it.

That’s a bit embarrassing. I knew I’d seen it before and still don’t know why my search didn’t work the first time. Thanks for the link. Sadly, the thread remains unanswered since March 2016. I guess that means it’s not possible to do what I would like to do.