No, wife is a former archetect/archeologist, and we have spent several summers (and lots of time) looking at old churches and, in particular, tracing the origins/evolution of various symbols.
What-is-now the Anglican Church has strong elements of pre-RCC traditions/origins.
I'm not sure what the current Episcopal/Anglican Church is doing, since I left over 20 years ago. Perhaps they have taken advantage of modern scholarship into the liturgical history of the pre-Whitby Celtic Church and grafted in some elements. Certainly the concept of the 'Anglican Communion' (i.e., unity in the church yet independence of each diocese or province) has been argued as originating in the Celtic tradition.
But this is a good example of where, to pardon the pun, the devil is in the details. The early Celtic Church, especially the Irish Church, was not so much episcopal at all in terms of its leadership, as it was monastic.
Moreover, the earliest fairly reliable date we have for a widespread Christian presence in the British Isles is from the writings of Tertullian, c. 220 AD. That doesn't mean it wasn't there before, it just means there is no solid proof of it. And sorry, but the likelihood of Joesph of Arimathea schlepping up Glastonbury Tor is slim to none. Much of the modern proponents of a Celtic Church depend heavily on Gildas, but even by the standards of the times, Gildas is problematic, something no amount of modern scholarship has really solved.
Despite all this - or perhaps partially because of it - there seems to have been a big resurgence of interest in the Celtic Church in recent years, and I think it is a fascinating topic. My own paternal ancestors come from the Island of Anglesey, not far from St Seiriol's abbey of Penmon.