Using 2 set of Double XP together doesn't boost it to 24 hours. So please don't waste your ingots.
---------------------------------------------------------------------------------------
This is the Dynasty Warriors: Unleashed Support Team.
Thank you for keeping in touch with us regarding with your concern on extending double XP boost. We would like to inform you that as stated in the game "if you use another scroll of the same type, you can extend the effect time up to 24 hours". This means that when you use a new XP boost while your old XP boost is still up. this will not overlap your old XP boost instead, this will extend your XP boost for another 60 minutes. Additionally, you can use 24 Double XP boost (60 mins) to have a total of 24 hours exp boost.
We would also want to clarify that if you use 2 double XP scroll (60mins), this will not extend your XP boost to 24 hours automatically. This will only provide you a total of 2 hours XP boost.
---------------------------------------------------------------------------------------
This is the Dynasty Warriors: Unleashed Support Team.
Thank you for keeping in touch with us regarding with your concern on extending double XP boost. We would like to inform you that as stated in the game "if you use another scroll of the same type, you can extend the effect time up to 24 hours". This means that when you use a new XP boost while your old XP boost is still up. this will not overlap your old XP boost instead, this will extend your XP boost for another 60 minutes. Additionally, you can use 24 Double XP boost (60 mins) to have a total of 24 hours exp boost.
We would also want to clarify that if you use 2 double XP scroll (60mins), this will not extend your XP boost to 24 hours automatically. This will only provide you a total of 2 hours XP boost.