Commentary
Here the priest's special longpoint is besieging quinta custodia. This possibly happened because the scholar was using priest's special longpoint to close in the grappling distance, and the priest saved himself by stepping back to keep the distance, and retreating into quinta custodia.
This is a situation with unclear initiative. If the priest is faster, he will strike with halpschilt, and it will lead to the play 29 or play 30. If the scholar is faster, we will thrust low. This thrust should be defended by a rebind shown in the last image. Here, the play of the binder and the bound is mentioned, because the scholar can perform an action that will leave the bind.