This is just not true in practice. In practice, most jazz combos feature a piano as the sole chordal instrument. Very seldom do they feature both piano and guitar as comping instruments. And if both are to comp at the same time, the pianist usually takes the dominant role. Mark Levine's "The Jazz Piano Book" attests to this, if you need a source.

Jazz is a music genre that originated in the African-American communities of New Orleans, Louisiana in the late 19th and early 20th centuries, with its roots in blues and ragtime. Since the 1920s Jazz Age, it has been recognized as a major form of musical expression in traditional and popular music.Jazz is characterized by swing and blue notes, complex chords, call and …

Dec 07, 2021 · Ramp up your metronome slowly over time up to 160bpm. Repeat the same exercise with the Reverse Charleston and Red Garland rhythms. Practice alternating between 2 and 4 feel by playing a 2 feel comping pattern for one head the 12 bar blues, and then a 4 feel on the next time through.