Irish Border: Customs Arrangements

As the Minister will know, in a deal or a no-deal Brexit, the use of the transit convention will mean that there will be no need for any infrastructure checks or controls at the Dover border. Could that not be applied to Northern Ireland as well? May I also ask whether the Minister agrees that all that the House really needs to know is what discussions Members of the House who are not members of the Government have been having with the European Union?