强强较量，巴黎vs拜仁是欧冠联赛阶段首次前两名球队直接交手（欧冠赛场首度上演榜首双雄正面对决：巴黎大战拜仁）

Clarifying match history

I'm considering whether they mean the current season. I can provide facts: PSG and Bayern faced each other in the UCL final in 2020 (Bayern won 1-0), in the 2021 quarterfinals (PSG advanced on away goals), and in the 2023 Round of 16 (Bayern advanced). The phrase "首次前两名球队直接交手" could be incorrect since UCL often has top teams facing off. If they mean "本赛季欧冠小组赛第一和第二在淘汰赛首轮碰面," this occurs annually during draws.Requesting clarification on matches

I think it's best to ask what season they're referring to. I can provide examples with dates: Bayern faced PSG in the 1994-95 group stage, where PSG won twice. I'm guessing they weren't top two then. So, I'll ask for clarification and provide a known head-to-head list. I could mention that these two teams have faced each other multiple times in the UCL, and I'll offer to pull the latest head-to-head stats if they specify a season.