There's Coltrane & Dolphy recordings.
There's Mingus & Dolphy recordings.
Your answer probably deals with Mingus. He was a very headstrong/opinionated Bandleader and
composer.
I doubt he woulda allowed Trane to go on those 20-minute exploratory solos. You don't woodshed on the bandstand...that kinda stuff.
Sometimes, these
dream groups don't produce the 'best-ever' music, either.