Two-time European winners Munster were dumped out of the Champions Cup at the pool stage for just the fourth time since 1998 as they were stunned by Castres at Thomond Park 31-29.
Edinburgh staged a second-half comeback to pick up a hard-fought 26-24 win over Gloucester in the Champions Cup and consigned the visitors to a fifth straight defeat.
Edinburgh were brought back down to earth in the Investec Champions Cup after a comfortable win last week was disrupted by a 33-0 defeat at Castres on Sunday.
Build-up, analysis, reports and reaction from the 2024/25 Champions Cup with the quarter-finals the next step on the road to May's final in Cardiff.
Marcus Smith provided the magic as Harlequins edged into the Investec Champions Cup quarter-finals.
A round-up of Sunday's Heineken Champions Cup action as Edinburgh booked a last-16 place after victory at Castres, while Stormers and Racing 92 won.
Recap Saturday's early Champions Cup Round 2 clashes, as Exeter proved too strong for the Bulls, while Edinburgh beat Castres.
Recap the latest Champions Cup action as Harlequins controversially booked a top-two seed, while Leinster smashed Bath to make the knockouts.