1. The Union and the United Kingdom shall use their best endeavours to conclude, by 31 December 2020, an agreement which supersedes this Protocol in whole or in part.

2. Any subsequent agreement between the Union and the United Kingdom shall indicate the parts of this Protocol which it supersedes. Once a subsequent agreement between the Union and the United Kingdom becomes applicable after the entry into force of the Withdrawal Agreement, this Protocol shall then, from the date of application of such subsequent agreement and in accordance with the provisions of that agreement setting out the effect of that agreement on this Protocol, not apply or shall cease to apply, as the case may be, in whole or in part, notwithstanding Article 20.