There *is* a connection between these three great bands.
In my head, primarily. Here are some quasi and fully prog items from Kansas, Supertramp, and Yes.
Some high-water moments from Steely Dan, Albert Hammond, Sr., King Harvest, Hurricane Smith, Brownsville Station, Sly Stone, Billy Paul, Dr. Hook and the Medicine Show, Stealers Wheel, The Sweet, Edgar Winter, The Isley Brothers, Dobie Gray, Stories, and Skylark.
Titans of improvised music display their immense powers.