The Republic of Ireland registered another blank in front of goal as Greece ran out 2-0 winners in Dublin in another blow to the start of Heimir Hallgrimsson's reign.
Poland thrashed 10-player Estonia 5-1 to book a place in the Euro 2024 play-off final, where they will face Wales after Rob Page's side beat Finland.
The Republic of Ireland's Euro 2024 automatic qualification hopes are over after a 2-0 home defeat to Greece.
Republic of Ireland's bid to get their Euro 2024 qualifying campaign up and running has to wait for another round of games.
Northern Ireland clinched Nations League survival despite losing 3-1 to Greece after Kosovo did them a favour by beating Cyprus 5-1.
Switzerland inflicted Portugal's first UEFA Nations League defeat to put Spain top of Group A2 on Sunday evening.