I didn't realise there was a difference - I've been with Zen since 2018 on FTTP.
Is the GEA better or worse than BTW? Currently I get 4ms ping to bbc.co.uk and tracert is 6 hops.
I don't get any lag or buffering or jitter. Hopefully this stays the same or I shall have to consider moving :/
A bit of a mixup there

.
All FTTP is Openreach. Not BTW, not Zen, not Sky or any other ISP. It goes from a fibre head-end exchange to underground aggregation points. From where it splits off and ultimately end up at the subscriber's premises.
At the fibre exchange all the fibre connections are connected over the appropriate Generic Ethernet Access (GEA) link cable to the required ISP's or wholesaler's backhaul. Each ISP or Wholesaler including BT Wholesale has its own GEA cables.
So .…
What jaydub is suggesting is that Zen are moving you from their BT Wholesale backhaul at the exchange, (which they pay BTW to route along with many others to one of a small number of handover nodes dotted around the country), to their own (probably newly installed) backhaul from the exchange. That costing them significantly less than getting BTW to carry it most of the way.
So your connection being "migrated" from an FTTP<>BTW GEA cable at the change to an FTTP<>ZEN GEA cable.
(Edit: Several clarification mods).
(Edit 2: Dammit LOL. I've just noticed the date-stamp of what I replied to

).
My broadband basic info/help site -
www.robertos.me.uk. Domains, sites and mail hosting -
Tsohost &
Ionos.
Connection - Three B311 4G, tbb tests normally 35-45Mpbs down, 65Mbps off-peak, 9-24 up. 1+ 8 Pro max 80Mbps down, 24Mbps up.
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To argue with a mindless bigot is foolish.
Edited by RobertoS (Mon 15-Jun-20 19:10:06)