Memory lane here .
My prior ISP installed a 2 way splitter.
One going to the tv's and one going to the cable modem.
However the one port was a passthu or 0 db and the port to the tv"s had like a 3db loss.
Problem was it kept failing and sometimes when they came out they did not have one to replace it..

What do you call that type of splitter?
I seem to recall it was not called a splitter.

It was not a powered device.

There is no such thing as stupid questions.
Just stupid answers.