The Orcs set up camp in the Tyranid Hive prepared to fight, their red shoes and machines at the ready.
It seems the Tyranids are preparing their young awaiting the hatching day.
The Hive Tyrant spots the intruders with its many heads and alerts its troops. Some of the Genestealers busy themselves with other things.
More Tyranids join in to the impending battle.
The Harpy spots the targets as her body glows electric from the glow of the luminescent hive walls.
The Orcs see the red forces.
The stare down before the battle seems to last for hours. Both forces simultaneously decide to forgo battle. The Orcs leave and the Tyranids continue their harvest.
There may be any number of reasons why these two did not fight, but only they will ever know. This will forever be known as The Battle that never happened...