Is the machine filled?

I have a Dutch tourist here, the ATF Oil
from the automatic transmission discharge drips and naturally then gets contact with the hot Kruemmer.
This is a hose that is bent above like a hook.
Can it be that his workshop at the transmission oil change
too much has been filled in, or there is another reason.
Can damage the machine's filling, or does that, which is too much is simply out.
On the trip to S. he did not notice anything but here on the
We're really gasping lakes.

It is a 4.2 A8 out of 95 with 4 step transmissions.

So long