So it should be possible to send out the same query to both backends (which result in some JSON output), and then have a combined output somewhere, There might be web-detail things such as same origin that someone who know the details about these things will have to resolve.
It'd be interesting to make one search against both the Noisebridge and Sudoroom databases. This could also be useful it searching against my own personal database at home. https://github.com/hzeller/stuff-org/pull/14#issuecomment-462604381