"If it's just the URC or just the Top 14 or just the Premiership … I don't think that's good for rugby in general.
The South African teams have added hugely to our domestic competition.
They're still trying to figure out how they manage the Champions Cup with the travel and all the rest but they'll get better at it.
They're quality teams," he said.
>>> FIFA Evicts BC Sports Hall of Fame from BC Place for World Cup
Leinster back-row forward and Ireland captain Caelan Doris discussed the importance of preparation and maintaining internal belief.
"It hasn't been perfect but we've found ways in games that we've been behind in, there's been composure there," said Doris.
"In the big games, you just want to attack it," he said.
"Moment by moment, there's going to be a lot of fights within the game and just trying to win as many of those as possible throughout it," said Doris.
"A big part of it is enjoying it. This is why you are a professional rugby player.
The sacrifices that the squad, all the staff, families, have made over the years to get us to a point like this.
These are the days that you strive for," he said.
Bordeaux head coach Yannick Bru focused heavily on the cultural significance of the venue for his scrum-half and captain, Maxime Lucu, a proud Basque native who watched the 2018 final from the stands as a second-division player.
"He is first and foremost the king of the Basque Country and then the king of Bordeaux," said Bru.
