They are all interlinked.

However, witr can be prayed as one rak’ah, 3, 5, 7 or 9.

Therefore, in the case of these 2 rak’ah, if a person intends it to be part of the witr, it can be.

In the night prayer what is salat ul shaf? Salat ul shaf we pray as 2 rakah before witr prayer and after nafl layl Is it a part of witr prayer or is it a part of nafl ul layl prayer