It’s weird, I’ve never heard it at all and still can’t, even with those songs. The closest the two ever sounded to each other to me was just the two note similarity between “feel it” and “feelin’” in Plush / Evenflow. Always figured the critics were being lazy and just ran with that. Both bands were definitely offspring of classic rock, but STP always felt more jazzy / metal based whereas Pearl Jam felt more bluesy / punk based (both bands obviously have a lot of different music so that doesn’t apply to all of it and is kind of reductive).