Six minutes in at the Aviva Stadium, Jack Carty had a very kickable penalty on the Leinster 22 to put Connacht ahead in the second leg of this round of 16 tie.
Carty missed, and it was almost completely one way traffic thereafter as pretty much everything that could go wrong did go wrong for the westerners and Leinster cantered into the quarter-finals in front of a crowd of 32,064.
There the Blues are likely to face Premiership leaders Leicester Tigers, who hold a 29-10 lead over Clermont Auvergne after their first meeting.
