May's principal aim is to finally get agreement on the knotty issue of customs, solving the problem of the Irish border.
Garran would later recall with approval that the 1891 convention was the first with the courage to face the "lion in the path", the issue of customs duties and tariffs, which had previously divided states such as Victoria, who were in favour of protectionism, and states such as New South Wales, who were in favour of free trade.
However, there will be no discussion before Easter on the big issues of a customs union or a confirmatory referendum.
Ministers and their opposition counterparts are taking part in working groups on some issues this week, but there will be no discussion before Easter on the big issues of a customs union or a confirmatory referendum, making it easy for Labour to reject the prime minister's overtures so far.
Let us look at the issue of a customs union, which is being much discussed at the moment.
The issue of Danish customs had resonated throughout the trial, which was attended by many Danish newspaper and television journalists.
The Brexiter MP also heaped pressure on May to publish full legal advice on the vexed issue of the customs backstop to avoid a hard border in Ireland.
At the same time, May faces intense pressure from leave-minded cabinet members and her backbench MPs not to compromise on the issue of a customs union.
In cooperation with Conservative, Liberal Democrat and crossbench peers, they will table a series of amendments on Wednesday evening, including the four ERG ones; and another aimed at reopening the issue of a customs union.
In notably warmer exchanges she suggested that the two sides were closer than many realised on the key issue of the customs union while Mr Corbyn did not repeat a previous claim that she was refusing to move from her "red lines".
