You can skip all cutscenes in this two dungeons and rewatch them in the inn room by using the book (i think it is called "The long Journey"). There you can find the dungeon cutscennes in the dungeon tab and the MSQ cutscenes in the MSQ tab.
The two dungeons will take 45 minutes to an hour with cutscenes and something like the half of it without.
If you have a patient party and they let you watch the cutscenes do it, it's just more immersing.
If you have no patient party skip the cutscenes or you may miss half of the dungeons, especially at the later half, where cutscene comes after cutscene.