The reason that tune by Silver and Harris is almost unknown, is because it in no ways compares with their best works.
There are many yardsticks by which a jazz musician is judged and Blue Mitchell doesn't measure up to Donald Byrd, in that solo, or in body of works.
The Jazz Messengers were an influential jazz combo that existed for over thirty-five years beginning in the early 1950s as a collective, and ending when long-time leader and founding drummer Art Blakey died in 1990. Blakey led or co-led the group from the outset. "Art Blakey" and "Jazz Messengers" became synonymous over the years, though Blakey did lead non-Messenger recording sessions and played as a sideman for other groups throughout his career.
The group evolved into a proving ground for young jazz talent. While veterans occasionally re-appeared in the group, by and large, each iteration of the Messengers included a lineup of new young players. Having the Messengers on one's resume was a rite of passage in the jazz world, and conveyed immediate bona fide.
How could the "Jazz Messengers" accomplish this if Art Blakey was such a sloppy lazy drummer? And you still haven't explained how Leon Thomas's just over a minute of yodeling was to the point of distraction.
Enjoy the music.