Thorvald and the Wyvern were linked in a tight circuit which excluded Shann.
Passing the Wyvern as if he did not see them, Thorvald came directly to Shann.
They have these disks, one to a Wyvern, and they control forces with them.
And now the Wyvern swung it back and forth in a metronome sweep.
Yet he had been sent there to get the Throg free and out of Wyvern territory.