Optimus only lingered a moment; he didn't care to draw it out much longer, what with Megatron driving moans out of his Prime with each roll of his hips and clench of his valve. He cried out, hips twitching and rocking to meet Megatron's own motions, spike hitting the top if his valve more heavily with every thrust.

His three chest cables were unfurling before Megatron's chest plates were even reopened, curling eagerly along the gladiator's thick armor. The prongs and claspers at the ends nipped teasingly at the edges of the exposed plates even as they retracted, before scraping ever so lightly at the unique spark chamber that matched only him.

Then they snapped in place, burrowing deep and completing the circuit at last.