Orbi RBK50 and Virgin Superhub 3

Hi FURRYe38
I posted as I wanted to help anyone who was having issues with setting the orbi up with superhub 3, as I read some horror stories both on here and on the Birgin communities. I still went out and bought one as I thought it was the best option for my house and it 20 or so devices, including 4 gaming consoles.
I’m very much a novice, but I have found I’m one of the lucky ones who seems to have a hub 3 which is not broken, at least in its ability to switch to modem mode with no difficulty.
I read all the posts and decided that, contrary to what the orbi set up process advised, set the orbi up first with the superhub, (now successfully in modem mode), switched off, as many posts described problems when doing this the other way round.
That is to say I initialised the orbi to a point where it sensed there was no internet and asked me to reboot my modem. At that point, and not before I switched on the Hub.
I made sure that before all this a had my orbi router in its place, the satellite where it was going to go and the orbi app on my phone.
1st I connected the Ethernet cable from the lowest port on the hub to the WAN port on the orbi, and powered on. I opened the app. The app knows there is a router. After failing to connect wirelessly to the router (there is of course no internet at this stage) it asked me to scan the bar code on the bottom of the router. Once this is done just follow the instructions to set up. This starts with the instruction to reboot the modem. One I did this it took less than 3 minuits for the orbi to establish connection with no issues. I did a quick speed test on the app to see if the full bandwidth was being passed to the orbi via the Ethernet cable and it was, all 381mps (I have vivid 350 with Virgin). It set up the satellite with no issues and I went round the house with my iPhone and Ookla Speedtest and was staggered to find WiFi speeds in most areas of between 340-380 nearly every time. I’m very pleased with my purchase.
However! Time will tell on the stability and the ability of the orbi to dish out smooth constant connections to all those devices.
One interesting thing to note, which was very handy for me, having young kids in the house, is that putting the hub into modem mode does not affect Virgins parental controles, so that was something I did not need to sort out on the Orbi.
I hope this might help someone else who wants to set up their orbi with superhub 3 in modem mode, as, while not being the only method you can use to do this, is by far the most efficient and less likely to degrade speeds, and also less likely to produce future issues, from one I have concluded on reading all the posts.
A lot of the posts related to faulty hubs so if you find difficulties with getting the hub into modem mode, eg red status light, them complain like hell to Virgin to get you a new hub, after all they are offering modem mode on their product and it needs to work in that way.