  In a larger size Riemann-Hilbert problem matching the local parametrices with
the global parametrix is often a major issue. In this article we present a
result that should tackle this problem in natural situations. We prove that, in
a general setting, it is possible to obtain a double matching, that is, a
matching condition on two circles instead of one circle. We discuss how this
matching approach can be used to obtain local scaling limits of correlation
kernels and apply our result to several examples from the existing literature.
