For a better understanting I uploaded a sequence of pictures:
Before backup --> no snapshot
Backup source VM
No incremental option selected --> there is no overall incremental for this VM in any other specification
backup starts on DP --> check time it starts creating the snapshot
backup starts, view from hyper-v --> time is closely the same as the one on the previous pic
will continue on the next post, Cant upload more than 5 pics at a time