In the end no one formally challenged Sir Keir for the leadership and, once he had resigned, no one took on Burnham to replace him. In other words, a process that could have been drawn out, wasn't.
So little wonder some in Team Burnham had expected to have quite a bit more time to complete their preparations – hence that feeling of being rushed.
In recent days, we are told, what are known as access talks have continued, with Burnham and his team talking to the civil service about their plans for government and the early events they want to hold next week and beyond.
The indications are they want to hit the ground running – in something of a blitz of appearances and announcements in his opening days and weeks in office.
The next prime minister has also begun to receive national security briefings. The handover of power, which has been underway for some time, has stepped up a gear.
Burnham claimed, as he became Labour leader, in an ear-catchingly absolute phrase, that "I haven't made any decisions yet about who will be in that top team."
Later, when asked if this really was the case, or whether in some instances he did know but would wait until next week to make announcements, he said he was "finalising those decisions."
This is the weekend for that finalising. Yes, there is the headline-generating question of who will be chancellor but there are plenty more jobs to sort too.
According to the Institute for Government, external, there are 149 ministerial posts, held by 122 people.
Some seek to dismiss the journalistic intrigue as to who might get which roles as soap opera – but it matters because the people selected shape the outlook, style and tone of a government.
And it is not remotely easy – it amounts to organisational jenga in which a prime minister and their team have to take account of politics, gender, geography and experience.
And plenty, including serving cabinet ministers, have been kept in the dark. Those hoping to stay on have, unsurprisingly, been privately making the case for stability and continuity.
Others have accepted they are on their way out.
As for the Labour Party itself, the stand out human observation is it appears to have remembered how to smile again.
There is a hope from many among their tribe that, with this leadership reboot, they might, just might, be back in the political match.
Clutching a water bottle and wearing a huge grin, one Labour MP said "think of this as a hydration break!" in a nod to the footballing novelty many of us have been trying to adjust to at the World Cup.
And yes, the Labour Party has decided – before the half time point of this parliament – to go for a change of tactics and a key substitution.
Their new captain, Andy Burnham, is of towering ambition, claiming he will personify "the most significant change" in our politics in 40 years.
Let's see.
Burnham's enthusiasm for taking on the tough stuff appears genuine, for now at least: social care in England being the most striking example.
But the tough stuff will be visible wherever he looks come Monday, at home and abroad.
Which poses the big picture question: to what extent does Brand Burnham survive contact with the facts of governing life? Does his blokeish easy charm have the resilience for what lies ahead?
And – within the scope of Labour's manifesto from two years ago, the pamphlet of promises which carries the party's mandate to govern – can he deliver enough, and quickly, to justify those smiles I was talking about?
Our fifth prime minister in four years takes office shortly, a role with vanishing little job security of late.
And yet again, an impatient, expectant electorate looks on.

2 hours ago
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