Whilst looking for something else, I stumbled across the following page on the Cambrian Archaeological Association website, which has some impressive videos from the Darganfod-Discovery Conference 2021, some of which are relevant to North Wales and the Marches.
https://cambrians.org.uk/talks/darganfod-discovery-2021-talks/

Presentations from Darganfod-Discovery 2021 – a day dedicated to fascinating recent work on the archaeology of Wales and the Marches, held in conjunction with Cardiff University on 10th April 2021. This online conference is the first of a new series that showcases work supported by the Cambrian Archaeological Association Research Fund as well as providing an opportunity for early career academic and independent researchers to present research on Wales and the Marches.

Lectures on the above page include:

• Prof Gary Lock of Kellogg College, Oxfor
  • ‘Moel y Gaer, Bodfari, a small hillfort in the Clwydians, Denbighshire’. (CAA Research Fund project)
• Eirini Konstantinidi, PhD researcher at Cardiff University
  • ‘If the dead could talk: a taphonomic approach to Neolithic mortuary treatment in the caves of Wales’.
• Adelle Bricking, PhD researcher at Cardiff University
  • ‘Life and death in Iron Age Wales: preliminary results from histological and stable isotope analysis from Dinorben and RAF St Athan’. (CAA Research Fund project)
• Dr Rachel Swallow, Honorary Research Fellow at University of Liverpool
  • ‘A square peg in a round hole: new interpretations for the eleventh-century northern Anglo-Welsh border, as told by the misfit Dodleston Castle in Cheshire’.

There are other great lectures too, but those listed above are specific to north Wales and Cheshire.