Oliver had been preoccupied as of late; it seemed as if he'd fallen off the face of the planet. People wouldn't know it, but he was still there, still putting things in motion to bring the Justice League together; with Diana's help, of course.
Oliver was surprised to hear Diana's voice coming through the communicator. She was back, then. "Loud and clear, Diana. It's good to hear your voice," Oliver responded, wondering if the others had heard her. He'd been lying low, it was high time he got out and let people know he was still here.