Freights on Metra Milwauke District North Line

I live by the Metra Milwaukee District North Line. I have heard that that the railroad is actually The Wisconsin Southern Fox Lake Branch. I was wondering: are there any freight trains that come along this line? And if there are, what times do they come?[?] Thanks!

Wisconsin & Southern has trackage rights over Metra and BRC between Fox Lake and Clearing. The inbound freight arrives at Clearing between 6AM and 8AM and the outbound freight departs from Clearing between 7PM and 8PM.

The Fox Lake Branch may refer to the trackage between Janesville and Fox Lake.

Then how come I never see or hear any freight train at these times?