indeed Galtier has no experience in the Champions League but we have to look at the PSG squad this season where the PSG squad is inhabited by players who are full of experience in the Champions League. But before that we have to wait for the draw for the round of 16 which will be held tomorrow. As you said the big match is something that might happen to PSG and I hope they can be met with real madrid or with bayern munich because if this happens then we can see the strength of psg this season in the champions league. On the one hand, PSG is a team that is very ambitious to reach the champions league title and Galtier can make it happen if he knows how to beat a team that is stronger than them.
Paris Saint Germain always has an experienced squad in the Champions League every season, last season for example they also had a squad that was not much different from now with many experienced players. But does it help? Honestly I have to say it didn't help.
Galtier must be aware of things like this if he is to speak more in the Champions League this season. And I think it doesn't have to be with what they show on the pitch when they play, before the game there has to be more motivation for the players to do their best. And also the role of players on the field will greatly affect their game.
I take for example when Real Madrid equalized in the last minute of the game, where Kroos played that role who gave Rudiger the confidence to go forward and receive the pass that he gave, the result was a goal for Real Madrid. Things like this become important in the game when in a state of urgency.