Prior to Exeter Chiefs Heineken Champions Cup final win over Racing '92 in October, which was the last club to win the decider at the first time of asking?
Badly worded question imo. I think the question refers to first appearance in the final as Exeter were in the 18-19 competition but didn't get past the group stage. So I think the question means winning it in their first appearance in the final, so the last team to do that was Toulon in 12-13.