SOPP608: "For the moment my challenge is BWV 564"

This question was sent by Paul, and he writes: “Thank you for sending your Organ Duet Recital. Bravo! For the moment my challenge is BWV 564. I am able to play the toccata by heart, Adagio I still need the score and fugue is not yet on an optimal level. I try to realize what you call articulate legato. Best greetings Paul”