In business, Philip Hammond is not Boris Johnson

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The Chancellor of the Exchequer will do something relatively rare Monday: move to a public forum to debate the economy and business.

As I wrote in the past, Philip Hammond's approach was simple: Brexit's arguments swirl more and more with a moody mood: do like a submarine.

Quietly, often with the support of business secretary Greg Clark, the Chancellor has pushed the government to as close a relationship as possible with the European Union.

Companies that have the most closely related export relationships with the EU say that anything else would be economically devastating. Mr. Hammond agrees.

But he rejected the chances of regular interviews or public platforms to argue his case. Why?

To understand that you must return to the World Economic Forum in Switzerland last January.

In front of an audience of British business leaders, the Chancellor said she wanted "very modest" changes for companies once the UK left the EU. He found the comments relatively obvious and innocuous.

They broke up in a row that made headlines for two days, while pro-Brexit conservatives attacked him for demanding the sweetest of Brexits – and Hammond had decided that the mute button would now be his political weapon of choice.

On Monday, the Chancellor speaks at the Conservative Party conference in Birmingham.

Since every apparition is punctuated by long periods of time under the waves, Hammond's relatives know that every "surface" is closely watched.

His speeches are not just economic; they are political. And the policy of his speech is about the former Foreign Secretary and his comments to "f *** business" when asked what their objections to Brexit were.

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Boris Johnson seems to have been particularly upset by the CBI, the corporate lobbying group.

Steve Baker, the former Brexit minister, said on Sunday that the CBI was "a serious threat to the UK's political stability and economic prospects".

Mr Baker said that the IWC exerted undue political influence, particularly on relations with the EU, which provoked the acerbic response of its Director General.

"CBI represents 190,000 companies and has a record number of members since [referendum], " Carolyn Fairbairn tweeted. "We speak for a wider range of companies than anyone else, shooting messengers do not lead anywhere."

Mr. Hammond wishes to point out that he has a lot more sympathy for Ms. Fairbairn than for Mr. Baker or Mr. Johnson.

He will say that business must be at the heart of Conservative Party policy. Without their support, Brexit will be all the more difficult, he says.

The Chancellor knows that he has difficulties, in an economy that many statistics have suffered since the referendum.

A pledge of several billion pounds more money for the NHS, which has prompted requests for additional funding from other government departments that manage the police and armed forces.

These are demands that Mr. Hammond would like to resist while the nation's debts still amounted to £ 1,800,000, or more than 80% of our national income.

And Brexit, which the Treasury considers very economical.

He will have to identify all these issues in his speech.

But it is clear that he wants a message to be heard. If it is not relentlessly the companies, the Conservative Party will only aggravate its problems.

The last thing she needs is a war with companies that are spending billions of dollars investing in Britain and around the world.