We have already talked about 2022 but here are the other meetings at this stage.

2010, Toulouse 26-16 Leinster, Le Stadium.

2011, Leinster 32-23 Toulouse, Aviva Stadium.

2019, Leinster 30-12 Toulouse, Aviva Stadium.

In both 2010 and 2011 the winner went on to lift the trophy…

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Leinster head coach Leo Cullen, speaking to BT Sport: "This is what you work towards all year and there is so many twists and turns in the tournament. There is four pool games which is organising the seeds really but they were so important.

"We worked incredibly hard in the pool stages to get a home seeding and here we are. We are now against the most successful team in the history of the competition. This is what we wanted."

On stopping Antoine Dupont: "You just got be alert the whole time if you switch off around the ruck he is so dangerous in terms of his stepping and his speed. He is a world-class player but are plenty of other threats."

After an agonising loss in the 2022 Champions Cup final to La Rochelle, debate sparked around can Leinster deal with the power game?

Two years in a row, Leo Cullen’s side cruised through to the later stages of the competition but came up suck in both the semi-final and final against Ronan O’Gara’s side who deployed direct tactics through their massive pack.

Will Skelton was a standout performer in both games and Toulouse with Emmanuel Meafou may look to deploy similar tactics – who at 6’8 and 22 stone could play the role as the enforcer.

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Here are some stats for each side - these are the averages per game.

Leinster score 6.3 tries to Toulouse's 3.7

Leinster score 44.8 points to Toulouse's 32.8

Leinster make 452 metres to Toulouse's 427

The making for some running rugby?

The sides met in the identical fixture last season with Leinster coming out 40-17 winners at the semi-final stage in Dublin.

However Toulouse had just come off the back of extra-time and a penalty shootout in their dramatic win over Munster, so will be much fresher this time around.

Yes you heard that right – a penalty shootout!

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Look who is in the building…

The Six Nations player of the tournament produced a record five try assists in a breath-taking quarter-final performance.

If Toulouse are going to win today I would be very surprised if this man doesn’t have a big role to play.

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Both sides come into the semi-final full of confidence.

Leinster hammered Leicester 55-24 to reach the last four while Toulouse were equalling impressive dispatching the Sharks 54-20.

Should be tries in this one then…

Ireland's Josh van der Flier has recovered from ankle injury to start for Leinster.

He is one of three changes to the side, with Charlie Ngatai in at centre for the injured Robbie Henshaw.

Jordan Larmour replaces James Lowe, who was ruled out with a calf injury.

Toulouse's Ugo Mola named an unchanged side from their quarter-final win over Cell C Sharks.

Leinster: Keenan; Larmour, Ringrose, Ngatai, O'Brien; R Byrne, Gibson-Park; Porter, Sheehan, Furlong, Molony, Ryan (c), Doris, Van der Flier, Conan.

Replacements: McKee, Healy, Ala'alatoa, Jenkins, Baird, McGrath, H Byrne, Frawley.

Toulouse: Ramos; Cruz Mallia, Barassi, Ahki, Lebel; Ntamack, Dupont (capt); Baille, Mauvaka, Aldegheri; Arnold, Meafou; Willis, Flament, Cros.

Replacements: Marchand, Neti, Ainu'u, Roumat, Elstadt, Placines, Graou, Retiere.

It is semi-final time and with nine European Cups between both sides, two giants of the Champions Cup are set to collide.

Leinster by topping the pool stages have the luxury of playing every knockout game at Aviva Stadium as they go in chase of a fifth title.

However Toulouse grabbed their fifth champion star in 2021 and have a wealth of international winning experience.

Two titans but only one can progress….

Home advantage might give the Irish province a slight favourite tag but strap yourself in for a potential classic.

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