philip sirois- thanks for your response(s). first of all, i don't hear any "snarcasm" in your posts at all. i just hear someone having a conversation with another person. thanks for addressing that issue. i appreciate that.
the thing i keep coming back to, after each listening, is why, for the first 3 or 4 minutes the bassist is playing/supporting the harmony, and then abandons(?) that approach while the vibes still stays clearly within the structure and harmony of the song?
for about 2 1/2 choruses he goes somewhere else , then returns to his original "supportive" approach for the remainder of the track. i guess i DO expect a certain "agreement " about the "language" that is being "spoken" between the musicians. i'll own that!
it's important for me to say here that any bassist has the right to play any music however he/she wants! in my experience, (and this is totally subjective), and in the musics i listen to, the bass functions as a "link" between the harmony and the rhythm - supporting the "piano", with melodic melodies ( basslines) that work with the "voicings" and at the same time, supplying a "pulse" that relates to the the drums, ( or replaces the drums in a duo). i don't see that as a limiting, or non-creative role, it is, for me, a challenging, lifelong study ( 39 years, so far). i understand that this approach is simply ONE way of playing - it is NOT the only way.
i've been fortunate to work with some pianists (mostly) who have great "ears" and encourage/instigate(!) harmonic adventure even when playing a "standard". i don't play piano very well, but my ability to construct voicings/chords at the piano, and play through tunes, ( or make stuff up), has been the most beneficial non-bass study in terms of being to function in the styles of music i'm drawn to. it opens up many more note possibilities "in the moment". practicing for me isn't always about playing the bass. ( i should be practicing now...).
also - the last 4 bars of the first "A", (before the bridge), does cadence ii-V-I in Gmajor, but the harmonic rhythm in the bridge is slower. good point. i guess i hear him in the few bars before then, still not in the harmony ( "to my ears", as always).
finally, i heard that Al Cohn once was on the bandstand when "Giant Steps" was called - he said "OK, but i've got my own changes!"
thanks for your time.