can I have two sky boxes on same router if they are on different SSIDs?

[Allen+Kitchenham]

I have Sky Q wired to a TP LINK Archer 600 V2 4G router with a Poynting aerial. My neighbour has exactly the same set up.  Because 4G reception is better in my house I have both of the aerials and 4G routers in my house with CAT 5 cables going between the routers and the SkyQ boxes.  It all works fine.

I did once connect both Sky Q boxes to the same router and they started to interfere with each other with my recordings appearing on their Sky Q box and vice versa, so we don't do that anymore.

However, I would like to be able to have a Plan B in case one of the routers breaks down such that we can both use the same router.

The routers have both a main network and a guest network with different SSIDs and there is a way of telling the router that I do not want my guests to be able to access my network.

My question is: Can I connect my neighbours Sky Q box using a cable (which will use my main network) and connect my box wirelessly using the Guest network.  Since the two boxes will connect to networks with different SSIDs will they be sufficiently segregated and not interfere with each other?

Thanks Allen

[PandJ2020]

SSID's are not a segregation method - they may well be on the same subnet.

As you've discovered multiple main Q boxes are not supported on the same subnet.

I believe a VLAN would be required to sufficiently segregate them.

[TimmyBGood]

@Allen+Kitchenham 

As @PandJ2020 indicates, that might work if it's a 'real' Guest service which is automatically VLANed to be entirely separate.

Note that Sky servers may well object to seeing two main Q boxes behind the same public IP.

[Allen+Kitchenham]

Thanks.  How do I tell if they are 'separately VLAN'd'?  Is it the sort of thing I can see by logging into the router?

[PandJ2020]

They won't have VLAN's.

It's probably too advanced for most home users.  (Supplied broadband routers will not have the facility)

The TP LINK may have the functionality - refer to the manufacturers website and/or forum.