4&1 lady into fan position, both man's and lady's feet are closed
23 man back L, back R; lady forward R, forward L, still in fan position
4&1 man chasse in place LRL, lady forward R, forward L, forward R (or forward R, together LR) still in fan position and preparing to turn the lady left (inside turn), lady coming across the man
23 lady's inside turn; man's rock step RL with a small back step on R, man turns slightly to R to face lady on the 23
4&1 chasse - man and lady facing each other, it can be done in place, I like to travel forward with it. Tendency for the lady to turn too soon, on the 4&1 instead of the 23