It really is a real spectacle, but alas this may be removed, on the one hand this is good, but on the other hand you could consider leaving something like this in the final and removing it in the earlier stages. It won't solve the problem of course, but it will keep the interest at least for the final if the teams can't decide the winner in regulation time
If the victory can't be decided in normal minutes then the match will go into extra time and this has often happened in previous finals so it's much more tense for the final process of achieving the title. If this scenario happens then I am afraid that Inter Milan's strength will be quite tired because they have a number of old players so that this fatigue could give an advantage to PSG even though in the previous match Inter managed to win in extra time.
PSG's strength is filled with a number of players who are not too young and not too old so that physically it might be possible for them to survive. But this is not a reference because Inter Milan have proven that when facing Barcelona in the semifinals.