The CPU in iPhones at the time was the Apple designed A7. The A7 provided performance improvements for custom NEON implementations. So, the ARM NEON could run on Apple’s CPU and Apple’s Burst mode runs on the CPU.SnappyCam was based-upon an ARM NEON implementation, novel for its day.
It captured 8 Mpx photos @ 20-30 fps, novel for its day.
Apple's Burst mode is strictly a CPU-based implementation, which does NOT use NEON.
So, your thinking is they hired this guy, specifically known for his image handling prowess, and didn’t patent or use any of his inventions in the time he was at Apple.