Both recordings were played in public in early September, during the annual convention of the International Association of Jazz Recording Collectors, or IAJRC, which actually took place in Kansas City.
The über-expert in jazz cinematography, Mark Cantor, was present and heard the records. This is what he says:
In the first, "Margie", in which the arranger seems to be channeling Sy Oliver and the Jimmie Lunceford recording, Bird has an 8-bar solo during a release late in the performance. What I found absolutely astounding [...] is a performance of "I'm Getting Sentimental Over You", as much a dance performance as jazz, in which Bird takes a 32-bar solo that is amazing in its maturity, complexity, and melodic invention. Let's hope these will be issued someday for all of us to enjoy over and over.
Amen to that.