Labour's Corbyn Wants Customs Union With EU After Brexit

The transcript discusses the UK's post-Brexit trade relations with the EU, focusing on the customs union. Labour proposes a new UK-EU customs union to avoid tariffs and a hard border in Northern Ireland, ensuring the UK has a say in future trade deals. In contrast, the Conservative government has shifted its stance from wanting tariff-free trade to accepting some tariffs, without specifying which sectors would be affected.

What shift in government stance regarding tariffs is mentioned in the text?

What is the significance of the 20 months mentioned after the referendum?