Actually they weren't separated at birth but they did have the same parents this is from
Websters Online:"The machine was developed by Epyx as the "Handy" and completed in 1987, at which point Atari bought the rights to it. Atari changed the internal speaker and removed the thumb-stick on the control pad before releasing it as the Lynx two years later, initially retailing in the US at US$189.95. Two creators of the system, Dave Needle and R.J. Mical, were also members of the Amiga design team and much to the frustration of Atari, the Amiga was used as the software development platform."
Bob