Typically these are the days when diplomatic language is sprinkled over past hurts.

When battles are halted and a departing leader is given a respectful send-off while their flaws are not dwelt upon.

Not so in Dublin this afternoon, where the words were unvarnished and the sense of relief hung lightly in the air.

The Taoiseach, often guarded in his comments around fragile Anglo-Irish relations, did not seek to diminish the difficulties created by Boris Johnson.

"We didn't always agree, and the relationship between our governments has been strained and challenged in recent times," he said.

Then in words almost reminiscent of Brendan Kennelly's poem 'Begin' - when the poet notes that "every beginning is a promise," - the Taoiseach looked to the future with hope.

He spoke of an opportunity to return to the "true spirit of partnership and mutual respect" needed to underpin the gains of the Good Friday Agreement.

To achieve that he said the new British Prime Minister would need to have an impulse to uphold existing agreements.

And that would mean rowing back the unilateral action on the Northern Ireland Protocol.

There is a view that sufficient doubt about this unilateral approach is present in Westminster to make this happen.

To get to that point a new Conservative Party Leader freed from the shackles of the influential Tory ERG faction will have to emerge.

While that is by no means guaranteed there are hopes here that the Conservative Party's renowned ability to reinvent or "correct" itself might offer up a new type of leader.

After all John Major followed in the aftermath of Margaret Thatcher.

However, there is a realisation too that should the leadership campaign become truly divisive, then that could well force candidates to take entrenched positions against the Northern Ireland Protocol.

Does this even raise the possibility that a candidate would emerge that could make Boris Johnson look pragmatic and reasonable when it comes to Irish issues?

That is the worst case scenario for politicians getting ready to hit the road home from Leinster House this evening.

Yet as they set out on that journey their mood is titled towards the positive.