Plusnet to Sky (City Fibre?) new ONT install required?

This is the first time of switching FTTP fibre providers for me (well, the MIL), from Plusnet to Sky. During the signup, I'm prompted to select an engineer visit date, which I thought was a bit odd - isn't this just plug'n'play - change the router?

I then receive an email from City Fibre confirming the appointment to install a new ONT if required, which I also thought was odd. Apparently I have much to learn!

Is this totally normal/expected?

If it is Sky using the CityFibre network which getting an email from CityFibre suggests then perfectly normal.

Ah thanks.

Do they usually require a different ONT, or is this a maybe? I ask because that requires furniture to be moved, although I do plan to be there on the day.

Sounds like you've booked a move from Plusnet via Openreach to Sky via CityFibre.

CityFibre is a totally separate network, it may or may not use Openreach ducts/poles (PIA) to get to the house, but it will not use the existing fibre to the house or ONT.

As a new install CityFibre will be XGS-PON rather than GPON that Openreach use and you'll get a symmetrical service.

The CityFibre appointment is normal as they will need to install their network to your house, note this will be running a new fibre to your house and the ONT install, not just a new ONT. They won't touch the Openreach fibre or ONT used for the Plusnet service today.

Can you please clarify if the MiL is currently using Plusnet through CityFibre and they are switching to Sky through CityFibre?

To be honest I didn't think you could get Plusnet through CityFibre.

Plusnet are part of BT Group and at the current time they only offer services via Openreach.

That means the original posters MIL will be doing an Openreach to CityFibre migration as well as a Plusnet to Sky migration. Hence the new ONT and new fibre to the home needed and the CityFibre appointment.

this is PN (openreach) to Sky(city fibre)..

its effectivly a new install

A whole new install, from one fibre network to a different one.

New fibre into the MIL’s property, a new ONT, and most likely, a different router too.

Yes PN OR and move to Sky, which I discovered is with City Fibre.

Oh dear, what have I done !

She had fibre installed by OR 2Y ago, from a pole across the street. I don't think she will want more boxes installed to the front of her house, or inside, so I may well need to back out of this. I, mistakenly it seems, assumed the basic infrastructure at the house would be used.

The second issue is that I now have a recollection that City Fibre dug the road over the last few years, so that's likely their route. But underground won't work as that would mean digging the drive - which is not going to happen. Am I jumping to the wrong conclusions?