Swansea climbed to second in the Sky Bet Championship with a 2-0 home victory over Blackburn.
Reading's defeat to Coventry on Friday opened the door for the chasing pack to close the gap, and goals in each half from Ben Cabango and Andre Ayew saw the Welsh club move to within four points of the early pacesetters.
The victory also lifted the Swans above Bournemouth, who had to rely on an 81st-minute Rodrigo Riquelme equaliser to rescue a 1-1 draw at home to Derby.
Norwich sit level on points with Bournemouth, one ahead of Middlesbrough, who moved into the play-off positions after Marvin Johnson's 81st-minute strike secured a 1-0 win over Nottingham Forest.