By Nick Assinder
Political Correspondent, BBC News website
So that has cleared that up.
Gordon Brown never ever told the prime minister he could never ever trust anything he ever said again. Ever.
All a question of trust, again
We know that is true because, for the first time since the allegation was made in a new book, the prime minister unequivocally, unhesitatingly said so.
Challenged by Michael Howard over the claimed comment, Mr Blair said: "He did not say that to me. The claim in the book happens to be wrong."
Right. Next question. Did the prime minister ever tell the chancellor he would stand down before the next election?
Unequivocally, unhesitatingly, the prime minister fudged it.
He had already dealt with this question, he claimed. "No one does deals on jobs like these."
Precisely why the prime minister cannot bring himself to state that this claim, also, is just not true continues to baffle.
The chancellor, of course, is in Africa. So it was not possible to read his expression to judge just how he was responding to the questions and answers.
Still, the exchange allowed Mr Howard to get in his soundbite that the prime minister did all these deals over dinner so had become "the deals on meals prime minister - no wonder the chancellor is not a happy eater".
Mr Howard taunted over new book
Yet, despite an apparently open goal for Mr Howard, the entire exchange was pretty unsatisfying.
The prime minister's tactic of reeling out a list of his government's achievements cannily takes some of the impetus out of the opposition leader's attacks.
Mind you, Mr Howard now has a decent response - "He goes on and on about these things, but no one believes a word he says".
And as for television viewers, the sight of Jack Straw and John Prescott urging Mr Howard to get up and ask even more questions might suggest they believe their man had trounced his tormentor.
The fact that they do it only when Mr Howard has run out of his allotted number of questions possibly goes unnoticed.
The claimed rift between Mr Blair and Mr Brown was the obvious line of attack and is bound to feature large in the election - which Mr Blair made clear was imminent.
Kennedy couldn't resist a jibe
Even Liberal Democrat leader Charles Kennedy could not resist it.
He kicked off with a far more considered question about Mr Brown's aid plans for Africa, but ended by throwing the chancellor's alleged rift with Mr Blair back at the prime minister.
So there it was - probably the opening salvo between the three men who will soon be leading their parties into a general election.
It promises to be a particularly nasty, personal campaign. At least as nasty and personal as, well, the last one.