It took Orion a moment to even register the fact that the other mech was talking to him, he was so focused on the slow but intense battle on the arena floor. Megatron make it look easy as he dodged and parried the equally-huge tank's blows. Even then, he hesitated in glancing away, giving the stranger only a questioning glance.

"...Pardon?"

He thought Megatron might have spotted him at the beginning of the match, but the meaning of the sword gesture, and even the idea that it might actually mean something completely escaped his notice.