Hawzah News Agency - Ayatollah Khamenei answers a question pertaining to the rules of Wuḍū’ and ghusl.
Q: What is the rule concerning an interval of time, which may separate the wiping and / or the washing of different body parts during wuḍū’ or ghusl?
A: There is no problem in an interval time — i.e. not observing succession — during the ghusl. However, wuḍū’ will be invalid if there is a delay in completing it to the extent that previously washed or wiped body parts dry up.
Source: https://www.leader.ir/en/book/32/Practical-Laws-of-Islam