Plaid Cymru leader Ieuan Wyn Jones has been ticked off by National Assembly Presiding Officer Lord Dafydd Elis-Thomas after failing to inform local AMs that he was walking through their constituencies in his recent 'Wales-wide walk'.
A series of email exchanges involving Mr Jones, Lord Elis-Thomas and Rhondda Labour AM Leighton Andrews reveals a fundamental disagreement between top politicians at the Assembly.
In the walk, Mr Jones went through communities with local Plaid activists, talking to residents and visiting local places with current and historical political and social significance.
He has promised to use what he learnt as a springboard for the party's manifesto at next year's Assembly election.
The email exchange begins with a note of complaint from Mr Andrews to the Presiding Officer: 'Dear Dafydd, Last week the AM for Ynys Mon turned up in my constituency for a walkabout lasting a couple of hours.
'I received no notice from him that he was to visit my constituency. I regard that as discourteous.
'My understanding is that there is some kind of protocol regarding visits to constituencies. While I am happy to welcome almost anybody to the Rhondda, I think it only courteous that other Members - particularly those with no regional interest - inform us in advance of their plans to visit.
'I look forward to hearing from you on this issue.'
Lord Elis-Thomas responded, 'Diolch [thanks] Leighton, I do not think we have a formal protocol, though I think perhaps we should, especially after the Royal Assent of the [new Government of Wales] Act.
'The same courtesies apply to visits as to mentioning a Member in the Chamber or corresponding with a constituent of another Member, namely that the Member should always be informed in advance, so that s/he may comment or respond in some way should the Member wish to do so.
'These are similar to the Westminster courtesies, and as a former MP, the Leader of the Opposition will be fully aware of them. Perhaps he takes the view that as a Party Group Leader he may visit anywhere and everywhere. My view is that the courtesies still apply.
'I am copying this to Ieuan.'
Replying to Lord Elis-Thomas, Mr Jones - regarded as something of a protege of the Presiding Officer - said, 'Annwyl [Dear] Dafydd, Thank you for your email. In his email to you Leighton Andrews refers to me as the Assembly Member for Ynys M™n, but I didn't visit the Rhondda or indeed any of the other constituencies I visited in that capacity. I did so as party leader on party business.
'When the current leader of the Labour Party in Wales and his colleagues visit Ynys M™n on party business I am not informed in advance. I do not think that the informal protocol we have covers visits of this kind.
'I am copying this reply to Leighton Andrews. Cofion [Regards], Ieuan.'
Mr Jones' walk took place during the week between the Royal Welsh Show and the National Eisteddfod, finishing on the Maes last Monday.
He passed through his own constituency of Ynys Mon, as well as Conwy, Caernarfon, Meirionnydd Nant Conwy, Aberystwyth, Carmarthen East and Dinefwr, Preseli Pembrokeshire, Rhondda, Caerphilly, Newport East, Newport West, Llanelli and Swansea East.