If I understood correctly, you are speaking about:
An ETF listed on the Nasdaq exchange
An LSE and the Borsa Italiana version of the same ETF
So you are comparing both versions and asking why the different distribution?
If so, the answer seems quite simple, different versions could have differences.
The US and European ETFs have differences between them, as they aren’t 100% copies of each others.
You can see that besides the dividend amounts, they have different dates.
There will be a really simple answer to this that it’s probably more beneficial if you do the research yourself. The answer is probably on justetf.com. If we go looking.
Have you checked out the distribution yields / expenses on both?
As others have also said do they have different distribution periods?