I do longer endurance rides. But not on the indoor trainer. After 90 minutes I’m bored out of my mind just staring at screens. My point is still the same: Recovery and low Z2 rides should not end up in the same RPE category as a 90min upper Z2/Z3 ride. By definition that doesn’t make any sense whatsoever.
PS: the explainer from Eddie is much better and also clarifies the “one more interval” vs “one more set of intervals” scenario - Half volume, add 20W to FTP? - #11 by eddie