The overall result is the transfer of one loop from one hand to the other.
After this stage of the process the hands are spread widely apart to force the "stitch" down the threads to the far end of the braid. This also helps to compress the earlier stitches.
This completes the half-cycle. The number of loops on each hand has swapped sides, with three on the left hand and four on the right. The process should now be repeated in mirror-image, walking down the stitches on the left hand, picking up the lowest loop from the right hand, and once again compressing the braid by spreading the hands apart.
The braids can be continued until the desired length has been achieved, or until the loops become too short to work with. For fine wool braids using seven loops, there should be around twelve stitches per inch, although this number obviously depends on tension and wool thickness.
Braids containing "even" numbered loops cause no further problems, but it is important to remember which hand goes next in the sequence, as there is nothing like the "move a loop to the minimum hand" reminder that you get with "odd" numbered loops.
Authentic fourteen loop braids (and any other two-operator situation) requires each person to take on one side of the braiding loops. The loop walking sequence slows somewhat as loops have to be moved between an operators' hands, but while the process is a little slower, at least there's someone to talk to while you do it!
It is possible to work on longer braids using this two person technique as the tension & hand separation sequence can be more than a normal spanswidth. Alternatively, for very long braids, another person can be employed to pat down the stitches as they are made.