Snips Assistant Base and Satellite Kit Testing

I am new to snips and also a bit of a novice.
I purchased a base kit and it tested o.k (Hey snips, temperature and humidity)
I then purchased a satellite kit and expected it, once loaded up, to recognise “hey Snips”. But nothing happens.
Should the satellite kit (with the pi zero W) test o.k as a standalone, or does the base ket have to be powered upas well and somehow linked to the satellite before the satellite recognises the wake word. When the satellite is booted up the screen shows everything o.k.
Any ideas ?