Surely Tohei's methods don't come from Shin Shin Toitsu. Tohei created Shin Shin Toitsu.
So where do you think Tohei's methods came from? Ueshiba? He made them up? Elsewhere?
Hugh, they come from shin shin toitsu. He studied shin shin toitsu before he saw how it fitted with Aikido and what Ueshiba was saying. Then he introduced those principles into his Aikido as he thought that would be a better way to transmit it, especially to westerners.