Absolutely incredible - one of the best gigs I've been to and I've been to a lot! Horace and Billy Cobham really had something going.
The only other gig that came anywhere near it was sitting on the front row of the Free Trade Hall for a Basie concert shortly after they recorded The Atomic Mr Basie. My 19-year-old self was so knocked out that Frank Foster was laughing at me - the saxophone section was only a few feet away.
No, he wasn't. To the best of my knowledge, the band I saw never recorded an album. It was this band, with Randy Brecker on tenor, not Bennie Maupin:
https://en.wikipedia.org/wiki/You_Gotta_Take_a_Little_Love
I saw the Silver quintet in 1969 with the Brecker brothers and Billy Cobham, but forgot to take my tape recorder into Ronnie Scott's with me. Pity, as it was a sensational session.