Inovelli White Switch 3 way Aux Switch Wiring Question

Switches Wiring Discussion
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1

Hi, I need help with wiring a 3 way. I have an inovelli white switch already wired to one side of the circuit picture attached where there are 4 wires 1 live 1 load 1 traveller and 1 neutral. On the other side I have a dumb switch at present that functions also as was waiting for the aux switch to be in stock and delivered.

On the dumb switch side I have 3 wires- 2 blacks which I assume are like line and load and a red which is traveller. I can attach the neutral as have neutral in that box. But on the inovelli aux switch there is only neutral traveller and ground. So what do I do with the extra 2 black wires in where the dumb switch is attached at present, do they get capped or do they both get tied capped together.

Any help appreciated. Pics are for the invovelli smart switch side I had connected a while back.
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2

Are you saying the load (light) comes out of the box of the aux switch?

If so, you put only the red (traveler) and white (neutral) on the aux switch. The black wire going to the aux box should come off the load of the Smart Switch. In the aux box, wire nut the black from the smart switch to the load (light).

3

That seems to be the case as on the dumb switch / aux side have both the load and line too it seems.
So wire nut both together it seems.
Or another option would be to put another inovelli smart switch there and connect all the wires??