George Bohannon / Hamilton Bohannon ... @ Motown

It must have been confusing at times in the late 60's with George Bohanon leading the Motortown Review Band and Hamilton Bohannon leading Stevie Wonder's live band. Which band was on duty when Stevie did live shows with other Motown acts during those times ?
I know George cut jazz tracks for Motown around 5/6 years earlier but ignoring those, were either of the guys on Motown recording sessions in the late 60's ?
I know George was on Temptations live recordings and in the 70's [[apart from recording with numerous non-Motown acts) he cut on Diana Ross & Stevie Wonder sessions ... of course, Hamilton formed his own band when Motown quit Detroit and had great recording success in his own right ...
. . . APART FROM THESE, are any Motown session details known for either guy ?

Spelt George's surname wrong in the thread title ... just one N ...

Seems George headed out to LA around 1970 but didn't seem to work for Motown much at all.
He was in a jazz outfit, the Ernie Watts Encounter that cut a lot of jazzy versions of Motown songs. He then pulled together the George Bohanon Brass & Reeds Section who did studio work. With them & in his own right he worked with the likes of Lamont Dozier, McKinley Jackson, Paul Riser & Angelo Bond + on many other jazz, soul & pop studio sessions. He was then a member of recording groups Brass Fever & then Karma. By the 80's, he was out on the road backing the likes of Ry Cooder.
Seems strange that after he led the last real incarnation of the touring Motown Revue Band, he was largely ignored by the company after the LA move happened [[though he did work on Diana Ross, Willie Hutch, Originals, Temptations & Stevie Wonder sessions).