Is Samurai wallet related to Darkwallet?

[pereira4]

I was reading on Amir Taaki which apparently has dissipated from the map. He was involved in Darkwallet, founder along with Cody Wilson, but it seems development has been frozen for a long time. Then Samurai wallet come out which I think aim for the same (better privacy).

Did some of the devs on Darkwallet go to Samurai wallet team or they are completely separated? also what are the differences from those two wallets?