It was a gig that got recorded.
Possibly not the only one, and possibly not the best one, recorded or otherwise.
Coltrane of the date, yes, but there were already even newer things going on in NYC.
It takes everybody time to catch up to things they didn't think up, because these damn instruments don't play themself and it takes work to get them to do things you yourself didn't find. Nobody bothers to look at that part, how real music takes work and work takes time. Short cuts don't last.
What I love about Joe Henderson is precisely that he is NOT an out player as much as he is not really an in player either. In terms of the instrument, he's a NextGen Lester Young (via Warne Marsh and Larry Teal) guy, the type of player who will find the sounds to play to make his music when the notes alone won't suffice.
Past that, right on 💗