  In recent work on superconformal quantum field theories, Razamat arrived at
elliptic kernel identities of a new and striking character: They relate solely
to the root systems $A_2$ and $A_3$ and have no coupling type parameters
\cite{Ra18}. The pertinent 2- and 3-variable Hamiltonians are analytic
difference operators and the kernel functions are built from the elliptic gamma
function. Razamat presented compelling evidence for the validity of these
identities, and checked them to a certain order in a power series expansion.
This paper is mainly concerned with analytical proofs of these identities. More
specifically, we furnish a complete proof of the identities for the $A_2$
elliptic case and for the $A_3$ hyperbolic case, and consider several
specializations. We also discuss the implications the kernel identities might
have for a Hilbert space scenario involving common eigenvectors of the
Hamiltonians and the integral operators associated with the kernel functions.
