Yes, I would expect that would be the case. Here are a couple of papers relative to Concurrent Engineering, the first being the development leading to production of the Navy F/A-18 E/F and F414 engine that dates to 1997.
May I respectfully point out that F/A-18 E/F was a development of the fully mature F/A-18 A/B/C/D? Such a program is ideal for concurrent engineering. And even though it was a development of a fully mature airframe E/F still ran into some serious snags. The same applies to the F414 engine which was a development of the fully mature F404.
The JSF on the other hand used NOTHING that was fully developed, much less mature. Not even such "simple" things like comm radios and data links were developed, never mind mature. Even its APG-81 radar was based on the APG-77 which was still not fully developed when JSF became the F-35 program. Concurrent Engineering is very high risk when developing a new technology airframe, never mind when simulataneously developing a new tech airframe, new engine, new stealth tech, and new systems.