It has been a contrasting season for Seán Cronin. In provincial colours, things could hardly be going any better.
After last year’s double, Leo Cullen’s side remain on course on their journey for back-to-back success in both competitions.
They have roared clear of the pack in Conference B of the Guinness Pro14, while they are just 80 minutes away from a Heineken Champions Cup final appearance in Newcastle.
On a personal level, the dynamic hooker Cronin is the joint-top scorer in the competition and has contributed to a dominant pack.
However, it hasn’t been all plain sailing and his outings in green have been more topsy-turvy.
Cronin played the final 15 minutes in last November’s win over the All Blacks, and had aspirations for the Six Nations to apply real pressure to captain Rory Best and prove to be more than an impact replacement off the bench.
After making Joe Schmidt’s match-day squads against England and Scotland, the 32-year-old was handed his first Six Nations start – 10 years after his international bow – against Italy.
It was a stuttering performance collectively, but Cronin paid a heavy price and was dropped from the squad for the final two rounds, though it is something he isn’t dwelling on with Europe on the mind.
"The Six Nations came and obviously I wasn’t involved towards the latter part," he told RTÉ Sport.
"I’m fully focused on that and looking forward to getting stuck in"
"The way I look at it is you have to move on pretty quick. I’m in a privileged position to be in an incredible Leinster squad where we are playing in the biggest games in Europe.
"I’m fully focused on that and looking forward to getting stuck in."
Toulouse arrive to the Irish capital looking to avenge their recent trip in January.
At the RDS Leinster claimed a bonus point win to leapfrog the French club in the pool and would go on to ultimately top the group after being edged out in the away fixture.
That 28-27 defeat at Stade Ernest Wallon, where Cronin was among the try scorers, is something he puts as much stock into as the eye-catching performance at the RDS.
The hosts built an early 14-0 lead, but by time Cronin crossed the whitewash in the 52nd minute, Leinster were in the lead before Thomas Ramos’ conversion inflicted a first defeat in the competition since the 2017 semi-final.
"A lot of lessons were learned from that game," he says. "We started very poorly, gave up 14 points. We managed to play well in that middle block, got back into the game and the lead, but again errors crept in and they managed to capitalise on that.
"We ended up slipping and it was pretty frustrating.
"At the RDS there was a lot on the line for us and I think it was our best performance of the year. We need to get back to that level of performance."
The former Connacht man believes the victory each confirms there is little to choose between the teams, and with the likes of Romain Ntamack, Antoine Dupont, Cheslin Kolbe in a potent Toulouse backline, is wary that the visitors can threaten from all around the pitch.
"These European games are special and we want to put in a performance at home"
"They are playing incredible stuff at the moment and are flying in the Top 14. They have threats everywhere, have an incredibly physical pack and possess backs that are scoring some of the best tries I have seen. They are going to be a huge test.
"It is going to have to go up a few levels.
"These European games are special and we want to put in a performance at home."
Follow Munster v Saracens (3pm, Saturday) & Leinster v Toulouse (3.15pm, Sunday) via our live blog on RTÉ.ie/sport and the News Now app. Listen to live national radio commentary of Leinster v Toulouse on RTÉ Radio 1's Sunday Sport.