Aviation Week & Space Technology September 20, 1976 pp. 16-17 Aviation Week & Space Technology September 20, 1976 pp. 18-19 Aviation Week & Space Technology September 20, 1976 p. 15 Aviation Week & Space Technology March 01, 1976 p. 12
I think you land the front oleo on the reduced size platform and while the rear fuselage unfold and you transit forward, you apply the brake once the landing gear is firmly on the ground until the rear fuselage as leveled out.
That's not the most simple landing to describe but it looks as fairly in on single move.
The airplane hooks into the probe first. Then the landing platform is raised up so the nose landing gear rests on it. Note that its aft section is initially hinged downward like the aft fuselage so the main landing gear can touch it. The aft section of the platform is then pivoted to horizontal as the aft fuselage pivots up to horizontal. Presumably the main landing gear wheels are somehow restrained to the hinged platform when it is vertical so the engines can be shut down while it is raised (the patent application was a little vague in that regard).