Munster have lost at home in the URC, 13-16 to the Bulls.
Connacht battled hard but were beaten 34-29 by the Stormers in Cape Town earlier.
The visitors thought they had drawn the game but a late Santiago Cordero try was cancelled after a TMO check for obstruction in the buildup.
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Cork Con will face Clontarf in the final of Division 1A of the Energia All-Ireland League.
The defending champions battled bravely to beat St Mary’s in the semi finals by 16-8 at Templeville Road.
Meanwhile Clontarf needed to come from behind to get the better of Lansdowne by 17 points to 15.
