So they are saying that the rings reflexivity would be enough to see in daylight on Earth at Saturn’s distance which is 9x Earth’s?
The rings on this "Super Saturn" (which is actually a brown dwarf, 10-40 times the mass of Jupiter) are 120 million kilometers in diameter. Given that Saturn is 1.2 billion kilometers away from the Earth at its closest approach, I'm sure rings this size would be visible in daylight.
120 million kilometers is pretty big. By comparison, the Earth is 150 million kilometers away from the Sun.