Delta load in dso and infocbue level

Hi friends hope u all doing well.

I got few doubts in loading data in DSO and Infocube.

when u delta loading data from PSA to DSO, by seeing the change log table we can tell that there are few delta load but when u loading delta load from PSA to infocube how can u see the delta changes (because we dont have change log table,have only fact table in infocube).

we can say that there is delta load by seeing request ids and change log table in DSO.

How can u identify the delta load in cube level when u loading from PSA to cube (not through DSO)?

is there any other ways to identify the delta load apart from DTP requests and change log table?

Thank you