Update:
I'm wearing the Aftershokz now, listening to a youtube video of a couple doing a tango whilst I'm doing this. £7 dongle from Amazon, Aftershokz Openmove. For some reason my brain was not acknowledging that USB can connect pretty well anything, not just data transferring of sticks etc., silly as my PC has wireless mouse, and, until recently, keyboard too. Keyboard died after 10+ years, so new Cherry wired one boight.
I can't rule out buying the headset version with a boom mic for the extended Zoom meetings I have, but that's not a major problem as I use a decent mic anyway. Some of my Zoom board meetings can last from 0930 to 1700, so battery life will be an issue, but with a quick top-up while we have our lunch (while still working) I think I'll manage. Thanks for guidance, YACF!
I can hear Mrs Wombat in the kitchen getting dinner ready, and I can hear myself speak, which was the main aim.
I'll also pair them with my phone, which reminds me that I need to pair my car nav/entertainment thingy, with the new phone too. I had to replace my ageing Sony Xperia Z5 which was still fine, because its too old to do wifi calling, and as our phone signal is so poor here, I'm missing calls from my ancient mother (which distresses her), and also not getting OTP codes from her bank when trying to pay for stuff for her, so I bought a monster Xiaomi thing with a battery that seems to last me 5 days.