Rippa: The variation where Black 17 connects and finishes with Black 29 is incomplete. White needs to play L7 or L11 or Black can connect at L9 threatening to cut and make a point by playing L11.
Sadaharu: Play that out again and see whether black can make a point or not
The variation where Black 17 connects and finishes with Black 29 is incomplete. White needs to play L7 or L11 or Black can connect at L9 threatening to cut and make a point by playing L11.