An expert on U.S.-China relations said a major takeaway from the Chinese spy flight saga was the subtle revelation that a functioning backchannel between the two nations existed. Despite past rhetoric from the U.S. and Chinese governments , the crisis showed that high-level officials from the two sides were able to leverage crisis communications during an emergency, Craig Singleton, a senior China fellow at the nonpartisan Foundation for Defense of Democracies, told Fox News Digital. "One of the one of the justifications for Secretary of State Blinken's upcoming, or now-canceled, trip to China was that it was intended to put a so-called 'floor' in the relationship to stabilize US-China ties," Singleton said in an interview. "And that included efforts to bolster these backchannel communications that could be used in a time of crisis. The implication was that, without these back channels, the two superpowers could veer towards a very serious sort of altercat...