Four years, two borders, one protocol.

UK PM Boris Johnson went to Manchester to address his party conference for the first time as leader. His speech proposed a new UK alternative to the backstop. But is is a serious prospect and is there enough time for it to be fully thrashed out as the Brexit clock counts down.

RTÉ Europe Editor Tony Connelly, London Correspondent Seán Whelan and Deputy Foreign Editor Colm Ó Mongáin look at the protocol's prognosis.