[nomadking]

Originally Posted by Hugh

But since it appears you are the only one who believes that, it doesn’t matter...

It's there in black and white in the Political Declaration.

1. The European Union, hereafter referred to as “the Union”, and the
United Kingdom of Great Britain and Northern Ireland, hereafter referred
to as “the United Kingdom”, ("the Parties”) have agreed this political
declaration on their future relationship, on the basis that Article 50(2)
of the Treaty on European Union (TEU) provides for the negotiation of an
agreement setting out the arrangements for the withdrawal of a
departing Member State, taking account of the framework
for its future relationship with the Union. In that context, this declaration
accompanies the Withdrawal Agreement that has been endorsed by
the Parties, subject to ratification.
...
138. In setting out the framework of the future relationship between
the Union and the United Kingdom, this declaration confirms, as set
out in the Withdrawal Agreement, that it is the clear intent of both
Parties to develop in good faith agreements giving effect to this
relationship and to begin the formal process of negotiations as
soon as possible after the United Kingdom’s withdrawal from the
Union, such that they can come into force by the end of 2020.

Link

The Political Declaration sets out the framework for the future relationship between the European Union and the United Kingdom. It provides instructions to negotiators that will deliver a future relationship by the end of 2020 covering an economic partnership, a security partnership and agreements on areas of shared interest.

BBC News

Formal negotiations on everything it contains can only begin after Brexit has actually happened - currently after 29 March 2019.